New file |
| | |
| | | |
| | | [common] |
| | | domain="studio.iot-yun.club" |
| | | |
| | | [host1] |
| | | ip=47.74.239.156 |
| | | port=10001 |
| | | |
| | | [host2] |
| | | ip=122.51.234.174 |
| | | port=10001 |
| | | |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2018 LingYun IoT Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: ddns_client.c |
| | | * Description: This is a ddns client code to report public IP address to |
| | | * server, it just need to send the domain name, and server |
| | | * can get its public IP address. |
| | | * |
| | | * Version: 1.0.0(1/1/2019) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "2019-1-1 01:38:08 PM" |
| | | * |
| | | ********************************************************************************/ |
| | | #include <stdio.h> |
| | | #include <errno.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | #include <sys/types.h> |
| | | #include <sys/socket.h> |
| | | #include <netinet/in.h> |
| | | #include <arpa/inet.h> |
| | | #include <getopt.h> |
| | | #include <libgen.h> |
| | | |
| | | #include "iniparser.h" |
| | | |
| | | #define MAX_HOSTS 3 |
| | | #define PROG_VERSION "v1.0.0" |
| | | |
| | | int socket_send_domain(char *serverip, int port, char *msg); |
| | | |
| | | static void program_usage(char *progname) |
| | | { |
| | | printf("Usage: %s [OPTION]...\n", progname); |
| | | printf(" %s is LingYun studio DDNS client program to report public IP address\n", progname); |
| | | |
| | | printf("\nMandatory arguments to long options are mandatory for short options too:\n"); |
| | | printf(" -c[conf ] Specify configure file\n"); |
| | | printf(" -h[help ] Display this help information\n"); |
| | | printf(" -v[version ] Display the program version\n"); |
| | | |
| | | printf("\n%s version %s\n", progname, PROG_VERSION); return; |
| | | } |
| | | |
| | | int main(int argc, char **argv) |
| | | { |
| | | char *conf_file = "./ddns.conf"; |
| | | char *progname=NULL; |
| | | int opt; |
| | | dictionary *ini; |
| | | char *str; |
| | | int val; |
| | | char *domain; |
| | | char *serverip; |
| | | int port; |
| | | int i; |
| | | char key[64]; |
| | | |
| | | struct option long_options[] = { |
| | | {"conf", required_argument, NULL, 'c'}, |
| | | {"version", no_argument, NULL, 'v'}, |
| | | {"help", no_argument, NULL, 'h'}, |
| | | {NULL, 0, NULL, 0} |
| | | }; |
| | | |
| | | progname = (char *)basename(argv[0]); |
| | | |
| | | /* Parser the command line parameters */ |
| | | while ((opt = getopt_long(argc, argv, "c:dvh", long_options, NULL)) != -1) |
| | | { |
| | | switch (opt) |
| | | { |
| | | case 'c': /* Set configure file */ |
| | | conf_file = optarg; |
| | | break; |
| | | |
| | | case 'v': /* Get software version */ |
| | | printf("%s version %s\n", progname, PROG_VERSION); |
| | | return 0; |
| | | |
| | | case 'h': /* Get help information */ |
| | | program_usage(progname); |
| | | return 0; |
| | | |
| | | default: |
| | | break; |
| | | } |
| | | } |
| | | |
| | | ini = iniparser_load(conf_file); |
| | | if( !ini ) |
| | | { |
| | | printf("ERROR: cannot parse file: '%s'\n", conf_file); |
| | | return -1; |
| | | } |
| | | |
| | | domain=iniparser_getstring(ini, "common:domain", NULL); |
| | | if( !domain ) |
| | | { |
| | | printf("ERROR: cannot parse domain in '%s'\n", conf_file); |
| | | return -1; |
| | | } |
| | | |
| | | for(i=1; i<MAX_HOSTS; i++) |
| | | { |
| | | memset(key, 0, sizeof(key)); |
| | | snprintf(key, sizeof(key), "host%d:ip", i); |
| | | |
| | | serverip = iniparser_getstring(ini, key, NULL); |
| | | |
| | | snprintf(key, sizeof(key), "host%d:port", i); |
| | | port = iniparser_getint(ini, key, 0); |
| | | |
| | | if( !serverip || !port ) |
| | | { |
| | | continue; |
| | | } |
| | | |
| | | printf("==> Start send domain '%s' to [%s:%d]\n", domain, serverip, port); |
| | | socket_send_domain(serverip, port, domain); |
| | | printf("\n"); |
| | | } |
| | | |
| | | iniparser_freedict(ini); |
| | | } |
| | | |
| | | int socket_send_domain(char *serverip, int port, char *msg) |
| | | { |
| | | int conn_fd = -1; |
| | | int rv = -1; |
| | | struct sockaddr_in serv_addr; |
| | | |
| | | struct sockaddr_in addr; |
| | | struct timeval timeo = {6, 0}; |
| | | socklen_t len = sizeof(timeo); |
| | | |
| | | conn_fd = socket(AF_INET, SOCK_STREAM, 0); |
| | | if(conn_fd < 0) |
| | | { |
| | | printf("ERROR: create socket failure: %s\n", strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | |
| | | memset(&serv_addr, 0, sizeof(serv_addr)); |
| | | serv_addr.sin_family = AF_INET; |
| | | serv_addr.sin_port = htons(port); |
| | | inet_aton( serverip, &serv_addr.sin_addr ); |
| | | |
| | | |
| | | setsockopt(conn_fd, SOL_SOCKET, SO_SNDTIMEO, &timeo, len); |
| | | |
| | | if( connect(conn_fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) |
| | | { |
| | | printf("ERROR: connect to server [%s:%d] failure: %s\n", serverip, port, strerror(errno)); |
| | | goto cleanup; |
| | | } |
| | | |
| | | if( write(conn_fd, msg, strlen(msg)) < 0 ) |
| | | { |
| | | printf("ERROR: Write data to server [%s:%d] failure: %s\n", serverip, port, strerror(errno)); |
| | | goto cleanup; |
| | | } |
| | | printf("ok\n"); |
| | | |
| | | sleep(1); |
| | | |
| | | cleanup: |
| | | close(conn_fd); |
| | | } |
| | | |
New file |
| | |
| | | #include <stdio.h>
|
| | | #include <stdlib.h>
|
| | | #include <unistd.h>
|
| | | #include <string.h>
|
| | | #include <errno.h>
|
| | | #include <ctype.h>
|
| | | #include <time.h>
|
| | | #include <pthread.h>
|
| | | #include <getopt.h>
|
| | | #include <libgen.h> |
| | | #include <sys/types.h> |
| | | #include <sys/socket.h>
|
| | | #include <arpa/inet.h>
|
| | | #include <netinet/in.h> |
| | | #include <sys/epoll.h>
|
| | | #include <sys/resource.h>
|
| | |
|
| | | #include "logger.h"
|
| | |
|
| | | #define LOGGER "/var/log/ddns_server.log"
|
| | |
|
| | | #define MAX_EVENTS 512
|
| | | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
|
| | |
|
| | | static inline void print_usage(char *progname);
|
| | | int socket_server_init(char *listen_ip, int listen_port);
|
| | | void set_socket_rlimit(void);
|
| | |
|
| | | int main(int argc, char **argv)
|
| | | {
|
| | | int listenfd, connfd;
|
| | | int serv_port = 0;
|
| | | int daemon_run = 0;
|
| | | char *progname = NULL;
|
| | | int opt;
|
| | | int rv;
|
| | | int i, j;
|
| | | int found;
|
| | | char buf[1024];
|
| | |
|
| | | int epollfd;
|
| | | struct epoll_event event;
|
| | | struct epoll_event event_array[MAX_EVENTS];
|
| | | int events;
|
| | | |
| | | struct option long_options[] = |
| | | { |
| | | {"daemon", no_argument, NULL, 'b'},
|
| | | {"port", required_argument, NULL, 'p'},
|
| | | {"help", no_argument, NULL, 'h'},
|
| | | {NULL, 0, NULL, 0}
|
| | | }; |
| | |
|
| | | progname = basename(argv[0]);
|
| | |
|
| | | /* Parser the command line parameters */
|
| | | while ((opt = getopt_long(argc, argv, "bp:h", long_options, NULL)) != -1) |
| | | { |
| | | switch (opt)
|
| | | { |
| | | case 'b':
|
| | | daemon_run=1;
|
| | | break;
|
| | |
|
| | | case 'p':
|
| | | serv_port = atoi(optarg);
|
| | | break;
|
| | |
|
| | | case 'h': /* Get help information */
|
| | | print_usage(progname);
|
| | | return EXIT_SUCCESS;
|
| | |
|
| | | default:
|
| | | break;
|
| | | } |
| | | } |
| | |
|
| | | if( !serv_port ) |
| | | { |
| | | print_usage(progname);
|
| | | return -1; |
| | | }
|
| | |
|
| | | if( logger_init(LOGGER, LOG_LEVEL_DEBUG, 10) < 0 )
|
| | | {
|
| | | printf("initial logger file '%s' failure\n", LOGGER);
|
| | | return 0;
|
| | | }
|
| | |
|
| | | set_socket_rlimit(); /* set max open socket count */
|
| | |
|
| | | if( (listenfd=socket_server_init(NULL, serv_port)) < 0 )
|
| | | {
|
| | | log_err("ERROR: %s server listen on port %d failure\n", argv[0],serv_port);
|
| | | return -2;
|
| | | }
|
| | | log_dbg("%s server start to listen on port %d\n", argv[0],serv_port);
|
| | |
|
| | |
|
| | | /* set program running on background */
|
| | | if( daemon_run ) |
| | | {
|
| | | daemon(0, 0);
|
| | | }
|
| | |
|
| | | if( (epollfd=epoll_create(MAX_EVENTS)) < 0 )
|
| | | {
|
| | | log_err("epoll_create() failure: %s\n", strerror(errno));
|
| | | return -3;
|
| | | }
|
| | |
|
| | | //event.events = EPOLLIN|EPOLLET;
|
| | | event.events = EPOLLIN;
|
| | | event.data.fd = listenfd;
|
| | |
|
| | | if( epoll_ctl(epollfd, EPOLL_CTL_ADD, listenfd, &event) < 0)
|
| | | {
|
| | | log_err("epoll add listen socket failure: %s\n", strerror(errno));
|
| | | return -4;
|
| | | }
|
| | |
|
| | |
|
| | | for ( ; ; ) |
| | | {
|
| | | /* program will blocked here */
|
| | | events = epoll_wait(epollfd, event_array, MAX_EVENTS, -1);
|
| | | if(events < 0)
|
| | | {
|
| | | log_err("epoll failure: %s\n", strerror(errno));
|
| | | break;
|
| | | }
|
| | | else if(events == 0)
|
| | | {
|
| | | log_err("epoll get timeout\n");
|
| | | continue;
|
| | | }
|
| | |
|
| | | /* rv>0 is the active events count */
|
| | | for(i=0; i<events; i++)
|
| | | {
|
| | | if ( (event_array[i].events&EPOLLERR) || (event_array[i].events&EPOLLHUP) )
|
| | | {
|
| | | log_err("epoll_wait get error on fd[%d]: %s\n", event_array[i].data.fd, strerror(errno));
|
| | | epoll_ctl(epollfd, EPOLL_CTL_DEL, event_array[i].data.fd, NULL);
|
| | | close(event_array[i].data.fd);
|
| | | }
|
| | |
|
| | | /* listen socket get event means new client start connect now */
|
| | | if( event_array[i].data.fd == listenfd )
|
| | | { |
| | | if( (connfd=accept(listenfd, (struct sockaddr *)NULL, NULL)) < 0)
|
| | | {
|
| | | log_err("accept new client failure: %s\n", strerror(errno));
|
| | | continue;
|
| | | }
|
| | |
|
| | | event.data.fd = connfd; |
| | | event.events = EPOLLIN;
|
| | | if( epoll_ctl(epollfd, EPOLL_CTL_ADD, connfd, &event) < 0 )
|
| | | {
|
| | | log_err("epoll add client socket failure: %s\n", strerror(errno));
|
| | | close(event_array[i].data.fd);
|
| | | continue;
|
| | | }
|
| | | log_dbg("epoll add new client socket[%d] ok.\n", connfd);
|
| | | }
|
| | |
|
| | | else /* already connected client socket get data incoming */
|
| | | {
|
| | | if( (rv=read(event_array[i].data.fd, buf, sizeof(buf))) <= 0)
|
| | | {
|
| | | log_err("socket[%d] read failure or get disconncet and will be removed.\n", event_array[i].data.fd);
|
| | | epoll_ctl(epollfd, EPOLL_CTL_DEL, event_array[i].data.fd, NULL);
|
| | | close(event_array[i].data.fd);
|
| | | continue;
|
| | | }
|
| | | else |
| | | {
|
| | | log_dbg("socket[%d] read get %d bytes data: %s\n", event_array[i].data.fd, rv, buf); |
| | | } |
| | | } |
| | | } /* for(i=0; i<rv; i++) */ |
| | | } /* while(1) */
|
| | |
|
| | | CleanUp:
|
| | | close(listenfd);
|
| | | return 0;
|
| | | }
|
| | |
|
| | |
|
| | | static inline void print_usage(char *progname)
|
| | | { |
| | | printf("Usage: %s [OPTION]...\n", progname);
|
| | | |
| | | printf(" %s is a socket server program, which used to verify client and echo back string from it\n", progname); |
| | | printf("\nMandatory arguments to long options are mandatory for short options too:\n"); |
| | | |
| | | printf(" -b[daemon ] set program running on background\n");
|
| | | printf(" -p[port ] Socket server port address\n");
|
| | | printf(" -h[help ] Display this help information\n");
|
| | | |
| | |
|
| | | printf("\nExample: %s -b -p 8900\n", progname);
|
| | | return ;
|
| | | }
|
| | |
|
| | |
|
| | | int socket_server_init(char *listen_ip, int listen_port)
|
| | | {
|
| | | struct sockaddr_in servaddr;
|
| | | int rv = 0;
|
| | | int on = 1;
|
| | | int listenfd;
|
| | |
|
| | | if ( (listenfd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
|
| | | {
|
| | | printf("Use socket() to create a TCP socket failure: %s\n", strerror(errno));
|
| | | return -1;
|
| | | }
|
| | |
|
| | | /* Set socket port reuseable, fix 'Address already in use' bug when socket server restart */
|
| | | setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
|
| | |
|
| | | memset(&servaddr, 0, sizeof(servaddr));
|
| | | servaddr.sin_family = AF_INET; |
| | | servaddr.sin_port = htons(listen_port); |
| | |
|
| | | if( !listen_ip ) /* Listen all the local IP address */
|
| | | {
|
| | | servaddr.sin_addr.s_addr = htonl(INADDR_ANY); |
| | | }
|
| | | else /* listen the specified IP address */
|
| | | {
|
| | | if (inet_pton(AF_INET, listen_ip, &servaddr.sin_addr) <= 0)
|
| | | {
|
| | | printf("inet_pton() set listen IP address failure.\n");
|
| | | rv = -2;
|
| | | goto CleanUp;
|
| | | }
|
| | | }
|
| | |
|
| | |
|
| | | if(bind(listenfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0)
|
| | | {
|
| | | printf("Use bind() to bind the TCP socket failure: %s\n", strerror(errno));
|
| | | rv = -3;
|
| | | goto CleanUp;
|
| | | }
|
| | |
|
| | | if(listen(listenfd, 13) < 0)
|
| | | {
|
| | | printf("Use bind() to bind the TCP socket failure: %s\n", strerror(errno));
|
| | | rv = -4;
|
| | | goto CleanUp;
|
| | | }
|
| | |
|
| | | CleanUp:
|
| | | if(rv<0)
|
| | | close(listenfd);
|
| | | else
|
| | | rv = listenfd;
|
| | |
|
| | | return rv;
|
| | | }
|
| | |
|
| | | /* Set open file description count to max */
|
| | | void set_socket_rlimit(void)
|
| | | {
|
| | | struct rlimit limit = {0};
|
| | |
|
| | | getrlimit(RLIMIT_NOFILE, &limit );
|
| | | limit.rlim_cur = limit.rlim_max;
|
| | | setrlimit(RLIMIT_NOFILE, &limit );
|
| | |
|
| | | printf("set socket open fd max count to %d\n", (int)limit.rlim_max);
|
| | | }
|
| | |
|
New file |
| | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @file ini_dictionary.c |
| | | @author N. Devillard |
| | | @brief Implements a dictionary for string variables. |
| | | |
| | | This module implements a simple dictionary object, i.e. a list |
| | | of string/string associations. This object is useful to store e.g. |
| | | informations retrieved from a configuration file (ini files). |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Includes |
| | | ---------------------------------------------------------------------------*/ |
| | | #include "ini_dictionary.h" |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | |
| | | /** Maximum value size for integers and doubles. */ |
| | | #define MAXVALSZ 1024 |
| | | |
| | | /** Minimal allocated number of entries in a dictionary */ |
| | | #define DICTMINSZ 128 |
| | | |
| | | /** Invalid key token */ |
| | | #define DICT_INVALID_KEY ((char*)-1) |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Private functions |
| | | ---------------------------------------------------------------------------*/ |
| | | |
| | | /* Doubles the allocated size associated to a pointer */ |
| | | /* 'size' is the current allocated size. */ |
| | | static void * mem_double(void * ptr, int size) |
| | | { |
| | | void * newptr ; |
| | | |
| | | newptr = calloc(2*size, 1); |
| | | if (newptr==NULL) { |
| | | return NULL ; |
| | | } |
| | | memcpy(newptr, ptr, size); |
| | | free(ptr); |
| | | return newptr ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Duplicate a string |
| | | @param s String to duplicate |
| | | @return Pointer to a newly allocated string, to be freed with free() |
| | | |
| | | This is a replacement for strdup(). This implementation is provided |
| | | for systems that do not have it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | static char * xstrdup(const char * s) |
| | | { |
| | | char * t ; |
| | | if (!s) |
| | | return NULL ; |
| | | t = (char*)malloc(strlen(s)+1) ; |
| | | if (t) { |
| | | strcpy(t,s); |
| | | } |
| | | return t ; |
| | | } |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Function codes |
| | | ---------------------------------------------------------------------------*/ |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Compute the hash key for a string. |
| | | @param key Character string to use for key. |
| | | @return 1 unsigned int on at least 32 bits. |
| | | |
| | | This hash function has been taken from an Article in Dr Dobbs Journal. |
| | | This is normally a collision-free function, distributing keys evenly. |
| | | The key is stored anyway in the struct so that collision can be avoided |
| | | by comparing the key itself in last resort. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | unsigned dictionary_hash(const char * key) |
| | | { |
| | | int len ; |
| | | unsigned hash ; |
| | | int i ; |
| | | |
| | | len = strlen(key); |
| | | for (hash=0, i=0 ; i<len ; i++) { |
| | | hash += (unsigned)key[i] ; |
| | | hash += (hash<<10); |
| | | hash ^= (hash>>6) ; |
| | | } |
| | | hash += (hash <<3); |
| | | hash ^= (hash >>11); |
| | | hash += (hash <<15); |
| | | return hash ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Create a new dictionary object. |
| | | @param size Optional initial size of the dictionary. |
| | | @return 1 newly allocated dictionary objet. |
| | | |
| | | This function allocates a new dictionary object of given size and returns |
| | | it. If you do not know in advance (roughly) the number of entries in the |
| | | dictionary, give size=0. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | dictionary * dictionary_new(int size) |
| | | { |
| | | dictionary * d ; |
| | | |
| | | /* If no size was specified, allocate space for DICTMINSZ */ |
| | | if (size<DICTMINSZ) size=DICTMINSZ ; |
| | | |
| | | if (!(d = (dictionary *)calloc(1, sizeof(dictionary)))) { |
| | | return NULL; |
| | | } |
| | | d->size = size ; |
| | | d->val = (char **)calloc(size, sizeof(char*)); |
| | | d->key = (char **)calloc(size, sizeof(char*)); |
| | | d->hash = (unsigned int *)calloc(size, sizeof(unsigned)); |
| | | return d ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Delete a dictionary object |
| | | @param d dictionary object to deallocate. |
| | | @return void |
| | | |
| | | Deallocate a dictionary object and all memory associated to it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void dictionary_del(dictionary * d) |
| | | { |
| | | int i ; |
| | | |
| | | if (d==NULL) return ; |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]!=NULL) |
| | | free(d->key[i]); |
| | | if (d->val[i]!=NULL) |
| | | free(d->val[i]); |
| | | } |
| | | free(d->val); |
| | | free(d->key); |
| | | free(d->hash); |
| | | free(d); |
| | | return ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get a value from a dictionary. |
| | | @param d dictionary object to search. |
| | | @param key Key to look for in the dictionary. |
| | | @param def Default value to return if key not found. |
| | | @return 1 pointer to internally allocated character string. |
| | | |
| | | This function locates a key in a dictionary and returns a pointer to its |
| | | value, or the passed 'def' pointer if no such key can be found in |
| | | dictionary. The returned character pointer points to data internal to the |
| | | dictionary object, you should not try to free it or modify it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char * dictionary_get(dictionary * d, const char * key, char * def) |
| | | { |
| | | unsigned hash ; |
| | | int i ; |
| | | |
| | | hash = dictionary_hash(key); |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | /* Compare hash */ |
| | | if (hash==d->hash[i]) { |
| | | /* Compare string, to avoid hash collisions */ |
| | | if (!strcmp(key, d->key[i])) { |
| | | return d->val[i] ; |
| | | } |
| | | } |
| | | } |
| | | return def ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Set a value in a dictionary. |
| | | @param d dictionary object to modify. |
| | | @param key Key to modify or add. |
| | | @param val Value to add. |
| | | @return int 0 if Ok, anything else otherwise |
| | | |
| | | If the given key is found in the dictionary, the associated value is |
| | | replaced by the provided one. If the key cannot be found in the |
| | | dictionary, it is added to it. |
| | | |
| | | It is Ok to provide a NULL value for val, but NULL values for the dictionary |
| | | or the key are considered as errors: the function will return immediately |
| | | in such a case. |
| | | |
| | | Notice that if you dictionary_set a variable to NULL, a call to |
| | | dictionary_get will return a NULL value: the variable will be found, and |
| | | its value (NULL) is returned. In other words, setting the variable |
| | | content to NULL is equivalent to deleting the variable from the |
| | | dictionary. It is not possible (in this implementation) to have a key in |
| | | the dictionary without value. |
| | | |
| | | This function returns non-zero in case of failure. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int dictionary_set(dictionary * d, const char * key, const char * val) |
| | | { |
| | | int i ; |
| | | unsigned hash ; |
| | | |
| | | if (d==NULL || key==NULL) return -1 ; |
| | | |
| | | /* Compute hash for this key */ |
| | | hash = dictionary_hash(key) ; |
| | | /* Find if value is already in dictionary */ |
| | | if (d->n>0) { |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | if (hash==d->hash[i]) { /* Same hash value */ |
| | | if (!strcmp(key, d->key[i])) { /* Same key */ |
| | | /* Found a value: modify and return */ |
| | | if (d->val[i]!=NULL) |
| | | free(d->val[i]); |
| | | d->val[i] = val ? xstrdup(val) : NULL ; |
| | | /* Value has been modified: return */ |
| | | return 0 ; |
| | | } |
| | | } |
| | | } |
| | | } |
| | | /* Add a new value */ |
| | | /* See if dictionary needs to grow */ |
| | | if (d->n==d->size) { |
| | | |
| | | /* Reached maximum size: reallocate dictionary */ |
| | | d->val = (char **)mem_double(d->val, d->size * sizeof(char*)) ; |
| | | d->key = (char **)mem_double(d->key, d->size * sizeof(char*)) ; |
| | | d->hash = (unsigned int *)mem_double(d->hash, d->size * sizeof(unsigned)) ; |
| | | if ((d->val==NULL) || (d->key==NULL) || (d->hash==NULL)) { |
| | | /* Cannot grow dictionary */ |
| | | return -1 ; |
| | | } |
| | | /* Double size */ |
| | | d->size *= 2 ; |
| | | } |
| | | |
| | | /* Insert key in the first empty slot. Start at d->n and wrap at |
| | | d->size. Because d->n < d->size this will necessarily |
| | | terminate. */ |
| | | for (i=d->n ; d->key[i] ; ) { |
| | | if(++i == d->size) i = 0; |
| | | } |
| | | /* Copy key */ |
| | | d->key[i] = xstrdup(key); |
| | | d->val[i] = val ? xstrdup(val) : NULL ; |
| | | d->hash[i] = hash; |
| | | d->n ++ ; |
| | | return 0 ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Delete a key in a dictionary |
| | | @param d dictionary object to modify. |
| | | @param key Key to remove. |
| | | @return void |
| | | |
| | | This function deletes a key in a dictionary. Nothing is done if the |
| | | key cannot be found. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void dictionary_unset(dictionary * d, const char * key) |
| | | { |
| | | unsigned hash ; |
| | | int i ; |
| | | |
| | | if (key == NULL) { |
| | | return; |
| | | } |
| | | |
| | | hash = dictionary_hash(key); |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | /* Compare hash */ |
| | | if (hash==d->hash[i]) { |
| | | /* Compare string, to avoid hash collisions */ |
| | | if (!strcmp(key, d->key[i])) { |
| | | /* Found key */ |
| | | break ; |
| | | } |
| | | } |
| | | } |
| | | if (i>=d->size) |
| | | /* Key not found */ |
| | | return ; |
| | | |
| | | free(d->key[i]); |
| | | d->key[i] = NULL ; |
| | | if (d->val[i]!=NULL) { |
| | | free(d->val[i]); |
| | | d->val[i] = NULL ; |
| | | } |
| | | d->hash[i] = 0 ; |
| | | d->n -- ; |
| | | return ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Dump a dictionary to an opened file pointer. |
| | | @param d Dictionary to dump |
| | | @param f Opened file pointer. |
| | | @return void |
| | | |
| | | Dumps a dictionary onto an opened file pointer. Key pairs are printed out |
| | | as @c [Key]=[Value], one per line. It is Ok to provide stdout or stderr as |
| | | output file pointers. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void dictionary_dump(dictionary * d, FILE * out) |
| | | { |
| | | int i ; |
| | | |
| | | if (d==NULL || out==NULL) return ; |
| | | if (d->n<1) { |
| | | fprintf(out, "empty dictionary\n"); |
| | | return ; |
| | | } |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]) { |
| | | fprintf(out, "%20s\t[%s]\n", |
| | | d->key[i], |
| | | d->val[i] ? d->val[i] : "UNDEF"); |
| | | } |
| | | } |
| | | return ; |
| | | } |
| | | |
| | | |
| | | /* Test code */ |
| | | #ifdef TESTDIC |
| | | #define NVALS 20000 |
| | | int main(int argc, char *argv[]) |
| | | { |
| | | dictionary * d ; |
| | | char * val ; |
| | | int i ; |
| | | char cval[90] ; |
| | | |
| | | /* Allocate dictionary */ |
| | | printf("allocating...\n"); |
| | | d = dictionary_new(0); |
| | | |
| | | /* Set values in dictionary */ |
| | | printf("setting %d values...\n", NVALS); |
| | | for (i=0 ; i<NVALS ; i++) { |
| | | sprintf(cval, "%04d", i); |
| | | dictionary_set(d, cval, "salut"); |
| | | } |
| | | printf("getting %d values...\n", NVALS); |
| | | for (i=0 ; i<NVALS ; i++) { |
| | | sprintf(cval, "%04d", i); |
| | | val = dictionary_get(d, cval, DICT_INVALID_KEY); |
| | | if (val==DICT_INVALID_KEY) { |
| | | printf("cannot get value for key [%s]\n", cval); |
| | | } |
| | | } |
| | | printf("unsetting %d values...\n", NVALS); |
| | | for (i=0 ; i<NVALS ; i++) { |
| | | sprintf(cval, "%04d", i); |
| | | dictionary_unset(d, cval); |
| | | } |
| | | if (d->n != 0) { |
| | | printf("error deleting values\n"); |
| | | } |
| | | printf("deallocating...\n"); |
| | | dictionary_del(d); |
| | | return 0 ; |
| | | } |
| | | #endif |
| | | /* vim: set ts=4 et sw=4 tw=75 */ |
New file |
| | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @file ini_dictionary.h |
| | | @author N. Devillard |
| | | @brief Implements a dictionary for string variables. |
| | | |
| | | This module implements a simple dictionary object, i.e. a list |
| | | of string/string associations. This object is useful to store e.g. |
| | | informations retrieved from a configuration file (ini files). |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | #ifndef _INI_DICTIONARY_H_ |
| | | #define _INI_DICTIONARY_H_ |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Includes |
| | | ---------------------------------------------------------------------------*/ |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | New types |
| | | ---------------------------------------------------------------------------*/ |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Dictionary object |
| | | |
| | | This object contains a list of string/string associations. Each |
| | | association is identified by a unique string key. Looking up values |
| | | in the dictionary is speeded up by the use of a (hopefully collision-free) |
| | | hash function. |
| | | */ |
| | | /*-------------------------------------------------------------------------*/ |
| | | typedef struct _dictionary_ { |
| | | int n ; /** Number of entries in dictionary */ |
| | | int size ; /** Storage size */ |
| | | char ** val ; /** List of string values */ |
| | | char ** key ; /** List of string keys */ |
| | | unsigned * hash ; /** List of hash values for keys */ |
| | | } dictionary ; |
| | | |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Function prototypes |
| | | ---------------------------------------------------------------------------*/ |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Compute the hash key for a string. |
| | | @param key Character string to use for key. |
| | | @return 1 unsigned int on at least 32 bits. |
| | | |
| | | This hash function has been taken from an Article in Dr Dobbs Journal. |
| | | This is normally a collision-free function, distributing keys evenly. |
| | | The key is stored anyway in the struct so that collision can be avoided |
| | | by comparing the key itself in last resort. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | unsigned dictionary_hash(const char * key); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Create a new dictionary object. |
| | | @param size Optional initial size of the dictionary. |
| | | @return 1 newly allocated dictionary objet. |
| | | |
| | | This function allocates a new dictionary object of given size and returns |
| | | it. If you do not know in advance (roughly) the number of entries in the |
| | | dictionary, give size=0. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | dictionary * dictionary_new(int size); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Delete a dictionary object |
| | | @param d dictionary object to deallocate. |
| | | @return void |
| | | |
| | | Deallocate a dictionary object and all memory associated to it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void dictionary_del(dictionary * vd); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get a value from a dictionary. |
| | | @param d dictionary object to search. |
| | | @param key Key to look for in the dictionary. |
| | | @param def Default value to return if key not found. |
| | | @return 1 pointer to internally allocated character string. |
| | | |
| | | This function locates a key in a dictionary and returns a pointer to its |
| | | value, or the passed 'def' pointer if no such key can be found in |
| | | dictionary. The returned character pointer points to data internal to the |
| | | dictionary object, you should not try to free it or modify it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char * dictionary_get(dictionary * d, const char * key, char * def); |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Set a value in a dictionary. |
| | | @param d dictionary object to modify. |
| | | @param key Key to modify or add. |
| | | @param val Value to add. |
| | | @return int 0 if Ok, anything else otherwise |
| | | |
| | | If the given key is found in the dictionary, the associated value is |
| | | replaced by the provided one. If the key cannot be found in the |
| | | dictionary, it is added to it. |
| | | |
| | | It is Ok to provide a NULL value for val, but NULL values for the dictionary |
| | | or the key are considered as errors: the function will return immediately |
| | | in such a case. |
| | | |
| | | Notice that if you dictionary_set a variable to NULL, a call to |
| | | dictionary_get will return a NULL value: the variable will be found, and |
| | | its value (NULL) is returned. In other words, setting the variable |
| | | content to NULL is equivalent to deleting the variable from the |
| | | dictionary. It is not possible (in this implementation) to have a key in |
| | | the dictionary without value. |
| | | |
| | | This function returns non-zero in case of failure. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int dictionary_set(dictionary * vd, const char * key, const char * val); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Delete a key in a dictionary |
| | | @param d dictionary object to modify. |
| | | @param key Key to remove. |
| | | @return void |
| | | |
| | | This function deletes a key in a dictionary. Nothing is done if the |
| | | key cannot be found. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void dictionary_unset(dictionary * d, const char * key); |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Dump a dictionary to an opened file pointer. |
| | | @param d Dictionary to dump |
| | | @param f Opened file pointer. |
| | | @return void |
| | | |
| | | Dumps a dictionary onto an opened file pointer. Key pairs are printed out |
| | | as @c [Key]=[Value], one per line. It is Ok to provide stdout or stderr as |
| | | output file pointers. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void dictionary_dump(dictionary * d, FILE * out); |
| | | |
| | | #endif |
New file |
| | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @file iniparser.c |
| | | @author N. Devillard |
| | | @brief Parser for ini files. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | /*---------------------------- Includes ------------------------------------*/ |
| | | #include <ctype.h> |
| | | #include "iniparser.h" |
| | | |
| | | /*---------------------------- Defines -------------------------------------*/ |
| | | #define ASCIILINESZ (1024) |
| | | #define INI_INVALID_KEY ((char*)-1) |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Private to this module |
| | | ---------------------------------------------------------------------------*/ |
| | | /** |
| | | * This enum stores the status for each parsed line (internal use only). |
| | | */ |
| | | typedef enum _line_status_ { |
| | | LINE_UNPROCESSED, |
| | | LINE_ERROR, |
| | | LINE_EMPTY, |
| | | LINE_COMMENT, |
| | | LINE_SECTION, |
| | | LINE_VALUE |
| | | } line_status ; |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Convert a string to lowercase. |
| | | @param s String to convert. |
| | | @return ptr to statically allocated string. |
| | | |
| | | This function returns a pointer to a statically allocated string |
| | | containing a lowercased version of the input string. Do not free |
| | | or modify the returned string! Since the returned string is statically |
| | | allocated, it will be modified at each function call (not re-entrant). |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | static char * strlwc(const char * s) |
| | | { |
| | | static char l[ASCIILINESZ+1]; |
| | | int i ; |
| | | |
| | | if (s==NULL) return NULL ; |
| | | memset(l, 0, ASCIILINESZ+1); |
| | | i=0 ; |
| | | while (s[i] && i<ASCIILINESZ) { |
| | | l[i] = (char)tolower((int)s[i]); |
| | | i++ ; |
| | | } |
| | | l[ASCIILINESZ]=(char)0; |
| | | return l ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Remove blanks at the beginning and the end of a string. |
| | | @param s String to parse. |
| | | @return ptr to statically allocated string. |
| | | |
| | | This function returns a pointer to a statically allocated string, |
| | | which is identical to the input string, except that all blank |
| | | characters at the end and the beg. of the string have been removed. |
| | | Do not free or modify the returned string! Since the returned string |
| | | is statically allocated, it will be modified at each function call |
| | | (not re-entrant). |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | static char * strstrip(const char * s) |
| | | { |
| | | static char l[ASCIILINESZ+1]; |
| | | char * last ; |
| | | |
| | | if (s==NULL) return NULL ; |
| | | |
| | | while (isspace((int)*s) && *s) s++; |
| | | memset(l, 0, ASCIILINESZ+1); |
| | | strcpy(l, s); |
| | | last = l + strlen(l); |
| | | while (last > l) { |
| | | if (!isspace((int)*(last-1))) |
| | | break ; |
| | | last -- ; |
| | | } |
| | | *last = (char)0; |
| | | return (char*)l ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get number of sections in a dictionary |
| | | @param d Dictionary to examine |
| | | @return int Number of sections found in dictionary |
| | | |
| | | This function returns the number of sections found in a dictionary. |
| | | The test to recognize sections is done on the string stored in the |
| | | dictionary: a section name is given as "section" whereas a key is |
| | | stored as "section:key", thus the test looks for entries that do not |
| | | contain a colon. |
| | | |
| | | This clearly fails in the case a section name contains a colon, but |
| | | this should simply be avoided. |
| | | |
| | | This function returns -1 in case of error. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getnsec(dictionary * d) |
| | | { |
| | | int i ; |
| | | int nsec ; |
| | | |
| | | if (d==NULL) return -1 ; |
| | | nsec=0 ; |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | if (strchr(d->key[i], ':')==NULL) { |
| | | nsec ++ ; |
| | | } |
| | | } |
| | | return nsec ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get name for section n in a dictionary. |
| | | @param d Dictionary to examine |
| | | @param n Section number (from 0 to nsec-1). |
| | | @return Pointer to char string |
| | | |
| | | This function locates the n-th section in a dictionary and returns |
| | | its name as a pointer to a string statically allocated inside the |
| | | dictionary. Do not free or modify the returned string! |
| | | |
| | | This function returns NULL in case of error. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char * iniparser_getsecname(dictionary * d, int n) |
| | | { |
| | | int i ; |
| | | int foundsec ; |
| | | |
| | | if (d==NULL || n<0) return NULL ; |
| | | foundsec=0 ; |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | if (strchr(d->key[i], ':')==NULL) { |
| | | foundsec++ ; |
| | | if (foundsec>n) |
| | | break ; |
| | | } |
| | | } |
| | | if (foundsec<=n) { |
| | | return NULL ; |
| | | } |
| | | return d->key[i] ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Dump a dictionary to an opened file pointer. |
| | | @param d Dictionary to dump. |
| | | @param f Opened file pointer to dump to. |
| | | @return void |
| | | |
| | | This function prints out the contents of a dictionary, one element by |
| | | line, onto the provided file pointer. It is OK to specify @c stderr |
| | | or @c stdout as output files. This function is meant for debugging |
| | | purposes mostly. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_dump(dictionary * d, FILE * f) |
| | | { |
| | | int i ; |
| | | |
| | | if (d==NULL || f==NULL) return ; |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | if (d->val[i]!=NULL) { |
| | | fprintf(f, "[%s]=[%s]\n", d->key[i], d->val[i]); |
| | | } else { |
| | | fprintf(f, "[%s]=UNDEF\n", d->key[i]); |
| | | } |
| | | } |
| | | return ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Save a dictionary to a loadable ini file |
| | | @param d Dictionary to dump |
| | | @param f Opened file pointer to dump to |
| | | @return void |
| | | |
| | | This function dumps a given dictionary into a loadable ini file. |
| | | It is Ok to specify @c stderr or @c stdout as output files. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_dump_ini(dictionary * d, FILE * f) |
| | | { |
| | | int i ; |
| | | int nsec ; |
| | | char * secname ; |
| | | |
| | | if (d==NULL || f==NULL) return ; |
| | | |
| | | nsec = iniparser_getnsec(d); |
| | | if (nsec<1) { |
| | | /* No section in file: dump all keys as they are */ |
| | | for (i=0 ; i<d->size ; i++) { |
| | | if (d->key[i]==NULL) |
| | | continue ; |
| | | fprintf(f, "%s = %s\n", d->key[i], d->val[i]); |
| | | } |
| | | return ; |
| | | } |
| | | for (i=0 ; i<nsec ; i++) { |
| | | secname = iniparser_getsecname(d, i) ; |
| | | iniparser_dumpsection_ini(d, secname, f) ; |
| | | } |
| | | fprintf(f, "\n"); |
| | | return ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Save a dictionary section to a loadable ini file |
| | | @param d Dictionary to dump |
| | | @param s Section name of dictionary to dump |
| | | @param f Opened file pointer to dump to |
| | | @return void |
| | | |
| | | This function dumps a given section of a given dictionary into a loadable ini |
| | | file. It is Ok to specify @c stderr or @c stdout as output files. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_dumpsection_ini(dictionary * d, char * s, FILE * f) |
| | | { |
| | | int j ; |
| | | char keym[ASCIILINESZ+1]; |
| | | int seclen ; |
| | | |
| | | if (d==NULL || f==NULL) return ; |
| | | if (! iniparser_find_entry(d, s)) return ; |
| | | |
| | | seclen = (int)strlen(s); |
| | | fprintf(f, "\n[%s]\n", s); |
| | | sprintf(keym, "%s:", s); |
| | | for (j=0 ; j<d->size ; j++) { |
| | | if (d->key[j]==NULL) |
| | | continue ; |
| | | if (!strncmp(d->key[j], keym, seclen+1)) { |
| | | fprintf(f, |
| | | "%-30s = %s\n", |
| | | d->key[j]+seclen+1, |
| | | d->val[j] ? d->val[j] : ""); |
| | | } |
| | | } |
| | | fprintf(f, "\n"); |
| | | return ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the number of keys in a section of a dictionary. |
| | | @param d Dictionary to examine |
| | | @param s Section name of dictionary to examine |
| | | @return Number of keys in section |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getsecnkeys(dictionary * d, char * s) |
| | | { |
| | | int seclen, nkeys ; |
| | | char keym[ASCIILINESZ+1]; |
| | | int j ; |
| | | |
| | | nkeys = 0; |
| | | |
| | | if (d==NULL) return nkeys; |
| | | if (! iniparser_find_entry(d, s)) return nkeys; |
| | | |
| | | seclen = (int)strlen(s); |
| | | sprintf(keym, "%s:", s); |
| | | |
| | | for (j=0 ; j<d->size ; j++) { |
| | | if (d->key[j]==NULL) |
| | | continue ; |
| | | if (!strncmp(d->key[j], keym, seclen+1)) |
| | | nkeys++; |
| | | } |
| | | |
| | | return nkeys; |
| | | |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the number of keys in a section of a dictionary. |
| | | @param d Dictionary to examine |
| | | @param s Section name of dictionary to examine |
| | | @return pointer to statically allocated character strings |
| | | |
| | | This function queries a dictionary and finds all keys in a given section. |
| | | Each pointer in the returned char pointer-to-pointer is pointing to |
| | | a string allocated in the dictionary; do not free or modify them. |
| | | |
| | | This function returns NULL in case of error. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char ** iniparser_getseckeys(dictionary * d, char * s) |
| | | { |
| | | |
| | | char **keys; |
| | | |
| | | int i, j ; |
| | | char keym[ASCIILINESZ+1]; |
| | | int seclen, nkeys ; |
| | | |
| | | keys = NULL; |
| | | |
| | | if (d==NULL) return keys; |
| | | if (! iniparser_find_entry(d, s)) return keys; |
| | | |
| | | nkeys = iniparser_getsecnkeys(d, s); |
| | | |
| | | keys = (char**) malloc(nkeys*sizeof(char*)); |
| | | |
| | | seclen = (int)strlen(s); |
| | | sprintf(keym, "%s:", s); |
| | | |
| | | i = 0; |
| | | |
| | | for (j=0 ; j<d->size ; j++) { |
| | | if (d->key[j]==NULL) |
| | | continue ; |
| | | if (!strncmp(d->key[j], keym, seclen+1)) { |
| | | keys[i] = d->key[j]; |
| | | i++; |
| | | } |
| | | } |
| | | |
| | | return keys; |
| | | |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param def Default value to return if key not found. |
| | | @return pointer to statically allocated character string |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the pointer passed as 'def' is returned. |
| | | The returned char pointer is pointing to a string allocated in |
| | | the dictionary, do not free or modify it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char * iniparser_getstring(dictionary * d, const char * key, char * def) |
| | | { |
| | | char * lc_key ; |
| | | char * sval ; |
| | | |
| | | if (d==NULL || key==NULL) |
| | | return def ; |
| | | |
| | | lc_key = strlwc(key); |
| | | sval = dictionary_get(d, lc_key, def); |
| | | return sval ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key, convert to an int |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param notfound Value to return in case of error |
| | | @return integer |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the notfound value is returned. |
| | | |
| | | Supported values for integers include the usual C notation |
| | | so decimal, octal (starting with 0) and hexadecimal (starting with 0x) |
| | | are supported. Examples: |
| | | |
| | | "42" -> 42 |
| | | "042" -> 34 (octal -> decimal) |
| | | "0x42" -> 66 (hexa -> decimal) |
| | | |
| | | Warning: the conversion may overflow in various ways. Conversion is |
| | | totally outsourced to strtol(), see the associated man page for overflow |
| | | handling. |
| | | |
| | | Credits: Thanks to A. Becker for suggesting strtol() |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getint(dictionary * d, const char * key, int notfound) |
| | | { |
| | | char * str ; |
| | | |
| | | str = iniparser_getstring(d, key, INI_INVALID_KEY); |
| | | if (str==INI_INVALID_KEY) return notfound ; |
| | | return (int)strtol(str, NULL, 0); |
| | | } |
| | | |
| | | int iniparser_getlong(dictionary * d, const char * key, int notfound) |
| | | { |
| | | char * str ; |
| | | |
| | | str = iniparser_getstring(d, key, INI_INVALID_KEY); |
| | | if (str==INI_INVALID_KEY) return notfound ; |
| | | return strtol(str, NULL, 0); |
| | | } |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key, convert to a double |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param notfound Value to return in case of error |
| | | @return double |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the notfound value is returned. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | double iniparser_getdouble(dictionary * d, const char * key, double notfound) |
| | | { |
| | | char * str ; |
| | | |
| | | str = iniparser_getstring(d, key, INI_INVALID_KEY); |
| | | if (str==INI_INVALID_KEY) return notfound ; |
| | | return atof(str); |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key, convert to a boolean |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param notfound Value to return in case of error |
| | | @return integer |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the notfound value is returned. |
| | | |
| | | A true boolean is found if one of the following is matched: |
| | | |
| | | - A string starting with 'y' |
| | | - A string starting with 'Y' |
| | | - A string starting with 't' |
| | | - A string starting with 'T' |
| | | - A string starting with '1' |
| | | |
| | | A false boolean is found if one of the following is matched: |
| | | |
| | | - A string starting with 'n' |
| | | - A string starting with 'N' |
| | | - A string starting with 'f' |
| | | - A string starting with 'F' |
| | | - A string starting with '0' |
| | | |
| | | The notfound value returned if no boolean is identified, does not |
| | | necessarily have to be 0 or 1. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getboolean(dictionary * d, const char * key, int notfound) |
| | | { |
| | | char * c ; |
| | | int ret ; |
| | | |
| | | c = iniparser_getstring(d, key, INI_INVALID_KEY); |
| | | if (c==INI_INVALID_KEY) return notfound ; |
| | | if (c[0]=='y' || c[0]=='Y' || c[0]=='1' || c[0]=='t' || c[0]=='T') { |
| | | ret = 1 ; |
| | | } else if (c[0]=='n' || c[0]=='N' || c[0]=='0' || c[0]=='f' || c[0]=='F') { |
| | | ret = 0 ; |
| | | } else { |
| | | ret = notfound ; |
| | | } |
| | | return ret; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Finds out if a given entry exists in a dictionary |
| | | @param ini Dictionary to search |
| | | @param entry Name of the entry to look for |
| | | @return integer 1 if entry exists, 0 otherwise |
| | | |
| | | Finds out if a given entry exists in the dictionary. Since sections |
| | | are stored as keys with NULL associated values, this is the only way |
| | | of querying for the presence of sections in a dictionary. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_find_entry( |
| | | dictionary * ini, |
| | | const char * entry |
| | | ) |
| | | { |
| | | int found=0 ; |
| | | if (iniparser_getstring(ini, entry, INI_INVALID_KEY)!=INI_INVALID_KEY) { |
| | | found = 1 ; |
| | | } |
| | | return found ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Set an entry in a dictionary. |
| | | @param ini Dictionary to modify. |
| | | @param entry Entry to modify (entry name) |
| | | @param val New value to associate to the entry. |
| | | @return int 0 if Ok, -1 otherwise. |
| | | |
| | | If the given entry can be found in the dictionary, it is modified to |
| | | contain the provided value. If it cannot be found, -1 is returned. |
| | | It is Ok to set val to NULL. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_set(dictionary * ini, const char * entry, const char * val) |
| | | { |
| | | return dictionary_set(ini, strlwc(entry), val) ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Delete an entry in a dictionary |
| | | @param ini Dictionary to modify |
| | | @param entry Entry to delete (entry name) |
| | | @return void |
| | | |
| | | If the given entry can be found, it is deleted from the dictionary. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_unset(dictionary * ini, const char * entry) |
| | | { |
| | | dictionary_unset(ini, strlwc(entry)); |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Load a single line from an INI file |
| | | @param input_line Input line, may be concatenated multi-line input |
| | | @param section Output space to store section |
| | | @param key Output space to store key |
| | | @param value Output space to store value |
| | | @return line_status value |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | static line_status iniparser_line( |
| | | char * input_line, |
| | | char * section, |
| | | char * key, |
| | | char * value) |
| | | { |
| | | line_status sta ; |
| | | char line[ASCIILINESZ+1]; |
| | | static char left_line[ASCIILINESZ+1]; |
| | | int len, offset ; |
| | | |
| | | strcpy(line, strstrip(input_line)); |
| | | len = (int)strlen(line); |
| | | |
| | | sta = LINE_UNPROCESSED ; |
| | | if (len<1) { |
| | | /* Empty line */ |
| | | sta = LINE_EMPTY ; |
| | | memset(input_line, 0, len); |
| | | } else if (line[0]=='#' || line[0]==';') { |
| | | /* Comment line */ |
| | | sta = LINE_COMMENT ; |
| | | memset(input_line, 0, len); |
| | | } else if (line[0]=='[') { |
| | | /* Section name */ |
| | | sscanf(line, "[%[^]]", section); |
| | | strcpy(section, strstrip(section)); |
| | | strcpy(section, strlwc(section)); |
| | | |
| | | /* Left configure will go to next time to parser */ |
| | | offset = strlen(section) + 2; |
| | | strcpy( left_line, strstrip(&(line[offset])) ); |
| | | strcpy( left_line, strstrip(left_line)); |
| | | |
| | | if( strlen(left_line) > 0) |
| | | { |
| | | strcpy(input_line, left_line); |
| | | strcat(input_line, "\n"); |
| | | } |
| | | else |
| | | { |
| | | memset(input_line, 0, len); |
| | | } |
| | | sta = LINE_SECTION ; |
| | | } else if (sscanf (line, "%[^=] = \"%[^\"]\"", key, value) == 2 |
| | | || sscanf (line, "%[^=] = '%[^\']'", key, value) == 2 |
| | | || sscanf (line, "%[^=] = %[^;#]", key, value) == 2) { |
| | | char *ptr = NULL; |
| | | |
| | | /* Usual key=value, with or without comments */ |
| | | strcpy(key, strstrip(key)); |
| | | strcpy(key, strlwc(key)); |
| | | strcpy(value, strstrip(value)); |
| | | /* |
| | | * sscanf cannot handle '' or "" as empty values |
| | | * this is done here |
| | | */ |
| | | if (!strncmp(value, "\"\"", 2) || (!strncmp(value, "''", 2)) ) { |
| | | value[0]=0 ; |
| | | } |
| | | |
| | | ptr = strchr(line, '='); |
| | | if('\''==*(ptr+1) || '\"'==*(ptr+1)) |
| | | { |
| | | offset = strlen(key)+strlen(value) + 1 + 2; /* Skip $key='$val' */ |
| | | } |
| | | else |
| | | { |
| | | offset = strlen(key)+strlen(value) + 1; /* Skip $key=$val */ |
| | | } |
| | | strcpy( left_line, strstrip(&(line[offset])) ); |
| | | |
| | | if( strlen(left_line) > 0) |
| | | { |
| | | strcpy(input_line, left_line); |
| | | strcat(input_line, "\n"); |
| | | } |
| | | else |
| | | { |
| | | memset(input_line, 0, len); |
| | | } |
| | | sta = LINE_VALUE ; |
| | | } else if (sscanf(line, "%[^=] = %[;#]", key, value)==2 |
| | | || sscanf(line, "%[^=] %[=]", key, value) == 2) { |
| | | /* |
| | | * Special cases: |
| | | * key= |
| | | * key=; |
| | | * key=# |
| | | */ |
| | | strcpy(key, strstrip(key)); |
| | | strcpy(key, strlwc(key)); |
| | | value[0]=0 ; |
| | | sta = LINE_VALUE ; |
| | | } else { |
| | | /* Generate syntax error */ |
| | | sta = LINE_ERROR ; |
| | | memset(input_line, 0, len); |
| | | } |
| | | return sta ; |
| | | } |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Parse an ini file and return an allocated dictionary object |
| | | @param ininame Name of the ini file to read. |
| | | @return Pointer to newly allocated dictionary |
| | | |
| | | This is the parser for ini files. This function is called, providing |
| | | the name of the file to be read. It returns a dictionary object that |
| | | should not be accessed directly, but through accessor functions |
| | | instead. |
| | | |
| | | The returned dictionary must be freed using iniparser_freedict(). |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | dictionary * iniparser_load(const char * ininame) |
| | | { |
| | | FILE * in ; |
| | | |
| | | char line [ASCIILINESZ+1] ; |
| | | char section [ASCIILINESZ+1] ; |
| | | char key [ASCIILINESZ+1] ; |
| | | char tmp [ASCIILINESZ+1] ; |
| | | char val [ASCIILINESZ+1] ; |
| | | |
| | | int last=0 ; |
| | | int len ; |
| | | int lineno=0 ; |
| | | int errs=0; |
| | | |
| | | dictionary * dict ; |
| | | |
| | | if ((in=fopen(ininame, "r"))==NULL) { |
| | | fprintf(stderr, "iniparser: cannot open %s\n", ininame); |
| | | return NULL ; |
| | | } |
| | | |
| | | dict = dictionary_new(0) ; |
| | | if (!dict) { |
| | | fclose(in); |
| | | return NULL ; |
| | | } |
| | | |
| | | memset(line, 0, ASCIILINESZ); |
| | | memset(section, 0, ASCIILINESZ); |
| | | memset(key, 0, ASCIILINESZ); |
| | | memset(val, 0, ASCIILINESZ); |
| | | last=0 ; |
| | | |
| | | while (fgets(line+last, ASCIILINESZ-last, in)!=NULL) { |
| | | lineno++ ; |
| | | CONTINUE_PARSER: |
| | | len = (int)strlen(line)-1; |
| | | if (len==0) |
| | | continue; |
| | | /* Safety check against buffer overflows */ |
| | | if (line[len]!='\n') { |
| | | fprintf(stderr, |
| | | "iniparser: input line too long in %s (%d)\n", |
| | | ininame, |
| | | lineno); |
| | | dictionary_del(dict); |
| | | fclose(in); |
| | | return NULL ; |
| | | } |
| | | /* Get rid of \n and spaces at end of line */ |
| | | while ((len>=0) && |
| | | ((line[len]=='\n') || (isspace(line[len])))) { |
| | | line[len]=0 ; |
| | | len-- ; |
| | | } |
| | | /* Detect multi-line */ |
| | | if (line[len]=='\\') { |
| | | /* Multi-line value */ |
| | | last=len ; |
| | | continue ; |
| | | } else { |
| | | last=0 ; |
| | | } |
| | | |
| | | switch ( iniparser_line(line, section, key, val) ) { |
| | | case LINE_EMPTY: |
| | | case LINE_COMMENT: |
| | | break ; |
| | | |
| | | case LINE_SECTION: |
| | | errs = dictionary_set(dict, section, NULL); |
| | | break ; |
| | | |
| | | case LINE_VALUE: |
| | | sprintf(tmp, "%s:%s", section, key); |
| | | errs = dictionary_set(dict, tmp, val) ; |
| | | break ; |
| | | |
| | | case LINE_ERROR: |
| | | fprintf(stderr, "iniparser: syntax error in %s (%d):\n", |
| | | ininame, |
| | | lineno); |
| | | fprintf(stderr, "-> %s\n", line); |
| | | errs++ ; |
| | | break; |
| | | |
| | | default: |
| | | break ; |
| | | } |
| | | |
| | | if( strlen(line) > 0) |
| | | { |
| | | goto CONTINUE_PARSER; |
| | | } |
| | | |
| | | memset(line, 0, ASCIILINESZ); |
| | | last=0; |
| | | if (errs<0) { |
| | | fprintf(stderr, "iniparser: memory allocation failure\n"); |
| | | break ; |
| | | } |
| | | } |
| | | if (errs) { |
| | | dictionary_del(dict); |
| | | dict = NULL ; |
| | | } |
| | | fclose(in); |
| | | return dict ; |
| | | } |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Free all memory associated to an ini dictionary |
| | | @param d Dictionary to free |
| | | @return void |
| | | |
| | | Free all memory associated to an ini dictionary. |
| | | It is mandatory to call this function before the dictionary object |
| | | gets out of the current context. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_freedict(dictionary * d) |
| | | { |
| | | dictionary_del(d); |
| | | } |
| | | |
| | | /* vim: set ts=4 et sw=4 tw=75 */ |
New file |
| | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @file cp_iniparser.h |
| | | @author N. Devillard |
| | | @brief Parser for ini files. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | #ifndef _INIPARSER_H_ |
| | | #define _INIPARSER_H_ |
| | | |
| | | /*--------------------------------------------------------------------------- |
| | | Includes |
| | | ---------------------------------------------------------------------------*/ |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | |
| | | /* |
| | | * The following #include is necessary on many Unixes but not Linux. |
| | | * It is not needed for Windows platforms. |
| | | * Uncomment it if needed. |
| | | */ |
| | | /* #include <unistd.h> */ |
| | | |
| | | #include "ini_dictionary.h" |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get number of sections in a dictionary |
| | | @param d Dictionary to examine |
| | | @return int Number of sections found in dictionary |
| | | |
| | | This function returns the number of sections found in a dictionary. |
| | | The test to recognize sections is done on the string stored in the |
| | | dictionary: a section name is given as "section" whereas a key is |
| | | stored as "section:key", thus the test looks for entries that do not |
| | | contain a colon. |
| | | |
| | | This clearly fails in the case a section name contains a colon, but |
| | | this should simply be avoided. |
| | | |
| | | This function returns -1 in case of error. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | int iniparser_getnsec(dictionary * d); |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get name for section n in a dictionary. |
| | | @param d Dictionary to examine |
| | | @param n Section number (from 0 to nsec-1). |
| | | @return Pointer to char string |
| | | |
| | | This function locates the n-th section in a dictionary and returns |
| | | its name as a pointer to a string statically allocated inside the |
| | | dictionary. Do not free or modify the returned string! |
| | | |
| | | This function returns NULL in case of error. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | char * iniparser_getsecname(dictionary * d, int n); |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Save a dictionary to a loadable ini file |
| | | @param d Dictionary to dump |
| | | @param f Opened file pointer to dump to |
| | | @return void |
| | | |
| | | This function dumps a given dictionary into a loadable ini file. |
| | | It is Ok to specify @c stderr or @c stdout as output files. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | void iniparser_dump_ini(dictionary * d, FILE * f); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Save a dictionary section to a loadable ini file |
| | | @param d Dictionary to dump |
| | | @param s Section name of dictionary to dump |
| | | @param f Opened file pointer to dump to |
| | | @return void |
| | | |
| | | This function dumps a given section of a given dictionary into a loadable ini |
| | | file. It is Ok to specify @c stderr or @c stdout as output files. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | |
| | | void iniparser_dumpsection_ini(dictionary * d, char * s, FILE * f); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Dump a dictionary to an opened file pointer. |
| | | @param d Dictionary to dump. |
| | | @param f Opened file pointer to dump to. |
| | | @return void |
| | | |
| | | This function prints out the contents of a dictionary, one element by |
| | | line, onto the provided file pointer. It is OK to specify @c stderr |
| | | or @c stdout as output files. This function is meant for debugging |
| | | purposes mostly. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_dump(dictionary * d, FILE * f); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the number of keys in a section of a dictionary. |
| | | @param d Dictionary to examine |
| | | @param s Section name of dictionary to examine |
| | | @return Number of keys in section |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getsecnkeys(dictionary * d, char * s); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the number of keys in a section of a dictionary. |
| | | @param d Dictionary to examine |
| | | @param s Section name of dictionary to examine |
| | | @return pointer to statically allocated character strings |
| | | |
| | | This function queries a dictionary and finds all keys in a given section. |
| | | Each pointer in the returned char pointer-to-pointer is pointing to |
| | | a string allocated in the dictionary; do not free or modify them. |
| | | |
| | | This function returns NULL in case of error. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char ** iniparser_getseckeys(dictionary * d, char * s); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param def Default value to return if key not found. |
| | | @return pointer to statically allocated character string |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the pointer passed as 'def' is returned. |
| | | The returned char pointer is pointing to a string allocated in |
| | | the dictionary, do not free or modify it. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | char * iniparser_getstring(dictionary * d, const char * key, char * def); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key, convert to an int |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param notfound Value to return in case of error |
| | | @return integer |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the notfound value is returned. |
| | | |
| | | Supported values for integers include the usual C notation |
| | | so decimal, octal (starting with 0) and hexadecimal (starting with 0x) |
| | | are supported. Examples: |
| | | |
| | | - "42" -> 42 |
| | | - "042" -> 34 (octal -> decimal) |
| | | - "0x42" -> 66 (hexa -> decimal) |
| | | |
| | | Warning: the conversion may overflow in various ways. Conversion is |
| | | totally outsourced to strtol(), see the associated man page for overflow |
| | | handling. |
| | | |
| | | Credits: Thanks to A. Becker for suggesting strtol() |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getint(dictionary * d, const char * key, int notfound); |
| | | int iniparser_getlong(dictionary * d, const char * key, int notfound); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key, convert to a double |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param notfound Value to return in case of error |
| | | @return double |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the notfound value is returned. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | double iniparser_getdouble(dictionary * d, const char * key, double notfound); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Get the string associated to a key, convert to a boolean |
| | | @param d Dictionary to search |
| | | @param key Key string to look for |
| | | @param notfound Value to return in case of error |
| | | @return integer |
| | | |
| | | This function queries a dictionary for a key. A key as read from an |
| | | ini file is given as "section:key". If the key cannot be found, |
| | | the notfound value is returned. |
| | | |
| | | A true boolean is found if one of the following is matched: |
| | | |
| | | - A string starting with 'y' |
| | | - A string starting with 'Y' |
| | | - A string starting with 't' |
| | | - A string starting with 'T' |
| | | - A string starting with '1' |
| | | |
| | | A false boolean is found if one of the following is matched: |
| | | |
| | | - A string starting with 'n' |
| | | - A string starting with 'N' |
| | | - A string starting with 'f' |
| | | - A string starting with 'F' |
| | | - A string starting with '0' |
| | | |
| | | The notfound value returned if no boolean is identified, does not |
| | | necessarily have to be 0 or 1. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_getboolean(dictionary * d, const char * key, int notfound); |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Set an entry in a dictionary. |
| | | @param ini Dictionary to modify. |
| | | @param entry Entry to modify (entry name) |
| | | @param val New value to associate to the entry. |
| | | @return int 0 if Ok, -1 otherwise. |
| | | |
| | | If the given entry can be found in the dictionary, it is modified to |
| | | contain the provided value. If it cannot be found, -1 is returned. |
| | | It is Ok to set val to NULL. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_set(dictionary * ini, const char * entry, const char * val); |
| | | |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Delete an entry in a dictionary |
| | | @param ini Dictionary to modify |
| | | @param entry Entry to delete (entry name) |
| | | @return void |
| | | |
| | | If the given entry can be found, it is deleted from the dictionary. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_unset(dictionary * ini, const char * entry); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Finds out if a given entry exists in a dictionary |
| | | @param ini Dictionary to search |
| | | @param entry Name of the entry to look for |
| | | @return integer 1 if entry exists, 0 otherwise |
| | | |
| | | Finds out if a given entry exists in the dictionary. Since sections |
| | | are stored as keys with NULL associated values, this is the only way |
| | | of querying for the presence of sections in a dictionary. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | int iniparser_find_entry(dictionary * ini, const char * entry) ; |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Parse an ini file and return an allocated dictionary object |
| | | @param ininame Name of the ini file to read. |
| | | @return Pointer to newly allocated dictionary |
| | | |
| | | This is the parser for ini files. This function is called, providing |
| | | the name of the file to be read. It returns a dictionary object that |
| | | should not be accessed directly, but through accessor functions |
| | | instead. |
| | | |
| | | The returned dictionary must be freed using iniparser_freedict(). |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | dictionary * iniparser_load(const char * ininame); |
| | | |
| | | /*-------------------------------------------------------------------------*/ |
| | | /** |
| | | @brief Free all memory associated to an ini dictionary |
| | | @param d Dictionary to free |
| | | @return void |
| | | |
| | | Free all memory associated to an ini dictionary. |
| | | It is mandatory to call this function before the dictionary object |
| | | gets out of the current context. |
| | | */ |
| | | /*--------------------------------------------------------------------------*/ |
| | | void iniparser_freedict(dictionary * d); |
| | | |
| | | #endif |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2018 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: logger.c |
| | | * Description: This file is the linux infrastructural logger system library, which |
| | | * is not thread safe. |
| | | * |
| | | * Version: 1.0.0(08/08/2012~) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "08/08/2018 04:24:01 PM" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #include "logger.h" |
| | | |
| | | #define PRECISE_TIME_FACTOR 1000 |
| | | |
| | | static unsigned long log_rollback_size = LOG_ROLLBACK_NONE; |
| | | |
| | | static st_logger _g_logger; |
| | | static st_logger *g_logger = &_g_logger; |
| | | |
| | | char *log_str[LOG_LEVEL_MAX + 1] = { "", "F", "E", "W", "N", "D", "I", "T", "M" }; |
| | | |
| | | static char *log_time_format = "%Y-%m-%d %H:%M:%S"; |
| | | |
| | | static void logger_default_signal_handler(int sig) |
| | | { |
| | | if (sig == SIGHUP) |
| | | { |
| | | signal(SIGHUP, logger_default_signal_handler); |
| | | log_fatal("SIGHUP received - reopenning log file [%s]", g_logger->file); |
| | | logger_reopen(); |
| | | } |
| | | } |
| | | |
| | | static void logger_banner(char *prefix) |
| | | { |
| | | fprintf(g_logger->fp, "%s log \"%s\" on level [%s] size [%lu], log system version %s\n", |
| | | prefix, g_logger->file, log_str[g_logger->level], log_rollback_size / 1024, LOG_VERSION_STR); |
| | | #if 0 |
| | | #ifdef LOG_FILE_LINE |
| | | fprintf(g_logger->fp, " [Date] [Time] [Level] [PID/TID] [File/Line] [Content]\n"); |
| | | #else |
| | | fprintf(g_logger->fp, " [Date] [Time] [Level] [PID/TID] [Content]\n"); |
| | | #endif |
| | | #endif |
| | | fprintf(g_logger->fp, "-----------------------------------------------------------------------------\n"); |
| | | } |
| | | |
| | | static void check_and_rollback(void) |
| | | { |
| | | if (log_rollback_size != LOG_ROLLBACK_NONE) |
| | | { |
| | | long _curOffset = ftell(g_logger->fp); |
| | | |
| | | if ((_curOffset != -1) && (_curOffset >= log_rollback_size)) |
| | | { |
| | | char cmd[512]; |
| | | |
| | | snprintf(cmd, sizeof(cmd), "cp -f %s %s.roll", g_logger->file, g_logger->file); |
| | | system(cmd); |
| | | |
| | | if (-1 == fseek(g_logger->fp, 0L, SEEK_SET)) |
| | | fprintf(g_logger->fp, "log rollback fseek failed \n"); |
| | | |
| | | rewind(g_logger->fp); |
| | | |
| | | truncate(g_logger->file, 0); |
| | | logger_banner("Already rollback"); |
| | | } |
| | | } |
| | | } |
| | | |
| | | int logger_init(char *filename, int level, int log_size) |
| | | { |
| | | struct sigaction act; |
| | | |
| | | if( !filename || strlen(filename)<=0 ) |
| | | { |
| | | fprintf(stderr, "%s() invalid input arguments\n", __FUNCTION__); |
| | | return -1; |
| | | } |
| | | |
| | | memset(g_logger, 0, sizeof(st_logger)); |
| | | |
| | | strncpy(g_logger->file, filename, FILENAME_LEN); |
| | | g_logger->level = level; |
| | | g_logger->size = log_size; |
| | | |
| | | log_rollback_size = g_logger->size <= 0 ? LOG_ROLLBACK_NONE : g_logger->size*1024; /* Unit KiB */ |
| | | |
| | | |
| | | /* logger to console, just need point to standard error */ |
| | | if (!strcmp(g_logger->file, DBG_LOG_FILE)) |
| | | { |
| | | g_logger->fp = stderr; |
| | | log_rollback_size = LOG_ROLLBACK_NONE; |
| | | g_logger->flag |= LOGGER_CONSOLE; |
| | | goto OUT; |
| | | } |
| | | |
| | | g_logger->fp = fopen(g_logger->file, "a+"); |
| | | if ( !g_logger->fp ) |
| | | { |
| | | fprintf(stderr, "Open log file \"%s\" failure\n", g_logger->file); |
| | | return -2; |
| | | } |
| | | |
| | | OUT: |
| | | act.sa_handler = logger_default_signal_handler; |
| | | sigemptyset(&act.sa_mask); |
| | | act.sa_flags = 0; |
| | | sigaction(SIGHUP, &act, NULL); |
| | | |
| | | logger_banner("\nInitialize"); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | void logger_raw(const char *fmt, ...) |
| | | { |
| | | va_list argp; |
| | | |
| | | if ( !g_logger->fp ) |
| | | return; |
| | | |
| | | check_and_rollback(); |
| | | |
| | | va_start(argp, fmt); |
| | | vfprintf(g_logger->fp, fmt, argp); |
| | | va_end(argp); |
| | | } |
| | | |
| | | |
| | | void logger_term(void) |
| | | { |
| | | if ( !g_logger->fp ) |
| | | return; |
| | | |
| | | logger_banner("\nTerminate"); |
| | | logger_raw("\n\n"); |
| | | |
| | | fflush(g_logger->fp); |
| | | |
| | | fclose(g_logger->fp); |
| | | g_logger->fp = NULL; |
| | | |
| | | memset(g_logger, 0, sizeof(*g_logger)); |
| | | |
| | | return ; |
| | | } |
| | | |
| | | |
| | | int logger_reopen(void) |
| | | { |
| | | int rc = 0; |
| | | |
| | | if (g_logger->flag & LOGGER_CONSOLE ) |
| | | { |
| | | fflush(g_logger->fp); |
| | | g_logger->fp = stderr; |
| | | return 0; |
| | | } |
| | | |
| | | if( g_logger->fp ) |
| | | { |
| | | logger_banner("\nClose"); |
| | | fflush(g_logger->fp); |
| | | |
| | | g_logger->fp = fopen(g_logger->file, "a+"); |
| | | |
| | | if ( !g_logger->fp ) |
| | | rc = -2; |
| | | } |
| | | else |
| | | { |
| | | rc = -3; |
| | | } |
| | | |
| | | if (!rc) |
| | | { |
| | | logger_banner("\nReopen"); |
| | | } |
| | | return rc; |
| | | } |
| | | |
| | | static void logger_printout(char *level, char *fmt, va_list argp) |
| | | { |
| | | char buf[MAX_LOG_MESSAGE_LEN]; |
| | | struct tm *local; |
| | | struct timeval now; |
| | | char timestr[256]; |
| | | |
| | | pthread_t tid; |
| | | |
| | | check_and_rollback(); |
| | | |
| | | #ifdef MULTHREADS |
| | | tid = pthread_self(); |
| | | #else |
| | | tid = getpid(); |
| | | #endif |
| | | |
| | | gettimeofday(&now, NULL); |
| | | local = localtime(&now.tv_sec); |
| | | |
| | | strftime(timestr, 256, log_time_format, local); |
| | | vsnprintf(buf, MAX_LOG_MESSAGE_LEN, fmt, argp); |
| | | |
| | | #ifdef DUMPLICATE_OUTPUT |
| | | printf("%s.%03ld [%s] [%06lu]: %s", |
| | | timestr, now.tv_usec / PRECISE_TIME_FACTOR, level, tid, buf); |
| | | #endif |
| | | |
| | | if (g_logger->fp) |
| | | fprintf(g_logger->fp, "%s.%03ld [%s] [%06lu]: %s", timestr, now.tv_usec / PRECISE_TIME_FACTOR, |
| | | level, tid, buf); |
| | | |
| | | if (g_logger->fp) |
| | | fflush(g_logger->fp); |
| | | } |
| | | |
| | | static void logger_printout_line(char *level, char *fmt, char *file, int line, va_list argp) |
| | | { |
| | | char buf[MAX_LOG_MESSAGE_LEN]; |
| | | struct tm *local; |
| | | struct timeval now; |
| | | char timestr[256]; |
| | | |
| | | pthread_t tid; |
| | | |
| | | check_and_rollback(); |
| | | |
| | | #ifdef MULTHREADS |
| | | tid = pthread_self(); |
| | | #else |
| | | tid = getpid(); |
| | | #endif |
| | | |
| | | gettimeofday(&now, NULL); |
| | | local = localtime(&now.tv_sec); |
| | | |
| | | strftime(timestr, 256, log_time_format, local); |
| | | vsnprintf(buf, MAX_LOG_MESSAGE_LEN, fmt, argp); |
| | | |
| | | #ifdef DUMPLICATE_OUTPUT |
| | | printf("%s.%03ld [%s] [%06lu] (%s [%04d]) : %s", |
| | | timestr, now.tv_usec / PRECISE_TIME_FACTOR, level, tid, file, line, buf); |
| | | #endif |
| | | |
| | | if (g_logger->fp) |
| | | fprintf(g_logger->fp, "%s.%03ld [%s] [%06lu] (%s [%04d]) : %s", |
| | | timestr, now.tv_usec / PRECISE_TIME_FACTOR, level, tid, file, line, buf); |
| | | |
| | | if (g_logger->fp) |
| | | fflush(g_logger->fp); |
| | | } |
| | | |
| | | void logger_comm(int level, char *fmt, ...) |
| | | { |
| | | va_list argp; |
| | | |
| | | if ( level > g_logger->level ) |
| | | return; |
| | | |
| | | va_start(argp, fmt); |
| | | logger_printout(log_str[level], fmt, argp); |
| | | va_end(argp); |
| | | } |
| | | |
| | | void logger_line(int level, char *file, int line, char *fmt, ...) |
| | | { |
| | | va_list argp; |
| | | |
| | | if ( level > g_logger->level ) |
| | | return; |
| | | |
| | | va_start(argp, fmt); |
| | | logger_printout_line(log_str[level], fmt, file, line, argp); |
| | | |
| | | va_end(argp); |
| | | } |
| | | |
| | | #define LINELEN 81 |
| | | #define CHARS_PER_LINE 16 |
| | | static char *print_char = |
| | | " " |
| | | " " |
| | | " !\"#$%&'()*+,-./" |
| | | "0123456789:;<=>?" |
| | | "@ABCDEFGHIJKLMNO" |
| | | "PQRSTUVWXYZ[\\]^_" |
| | | "`abcdefghijklmno" |
| | | "pqrstuvwxyz{|}~ " |
| | | " " |
| | | " " |
| | | " ???????????????" |
| | | "????????????????" |
| | | "????????????????" |
| | | "????????????????" |
| | | "????????????????" |
| | | "????????????????"; |
| | | |
| | | void logger_dump(int level, char *buf, int len) |
| | | { |
| | | int rc; |
| | | int idx; |
| | | char prn[LINELEN]; |
| | | char lit[CHARS_PER_LINE + 2]; |
| | | char hc[4]; |
| | | short line_done = 1; |
| | | |
| | | if ( level > g_logger->level ) |
| | | return; |
| | | |
| | | rc = len; |
| | | idx = 0; |
| | | lit[CHARS_PER_LINE] = '\0'; |
| | | |
| | | while (rc > 0) |
| | | { |
| | | if (line_done) |
| | | snprintf(prn, LINELEN, "%08X: ", idx); |
| | | |
| | | do |
| | | { |
| | | unsigned char c = buf[idx]; |
| | | snprintf(hc, 4, "%02X ", c); |
| | | strncat(prn, hc, LINELEN); |
| | | |
| | | lit[idx % CHARS_PER_LINE] = print_char[c]; |
| | | } |
| | | while (--rc > 0 && (++idx % CHARS_PER_LINE != 0)); |
| | | |
| | | line_done = (idx % CHARS_PER_LINE) == 0; |
| | | if (line_done) |
| | | { |
| | | #ifdef DUMPLICATE_OUTPUT |
| | | printf("%s %s\n", prn, lit); |
| | | #endif |
| | | if (g_logger->fp) |
| | | fprintf(g_logger->fp, "%s %s\n", prn, lit); |
| | | } |
| | | } |
| | | |
| | | if (!line_done) |
| | | { |
| | | int ldx = idx % CHARS_PER_LINE; |
| | | lit[ldx++] = print_char[(int)buf[idx]]; |
| | | lit[ldx] = '\0'; |
| | | |
| | | while ((++idx % CHARS_PER_LINE) != 0) |
| | | strncat(prn, " ", LINELEN); |
| | | |
| | | #ifdef DUMPLICATE_OUTPUT |
| | | printf("%s %s\n", prn, lit); |
| | | #endif |
| | | if (g_logger->fp) |
| | | fprintf(g_logger->fp, "%s %s\n", prn, lit); |
| | | |
| | | } |
| | | } |
New file |
| | |
| | | /******************************************************************************** |
| | | * Copyright: (C) 2018 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: logger.h |
| | | * Description: This file is the linux infrastructural logger system library |
| | | * |
| | | * Version: 1.0.0(08/08/2018~) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "08/08/2018 05:16:56 PM" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #ifndef __LOGGER_H_ |
| | | #define __LOGGER_H_ |
| | | |
| | | #include <stdarg.h> |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | #include <signal.h> |
| | | #include <time.h> |
| | | #include <errno.h> |
| | | |
| | | #include <pthread.h> |
| | | #include <sys/types.h> |
| | | #include <sys/time.h> |
| | | |
| | | #define LOG_VERSION_STR "2.0.0" |
| | | |
| | | #ifndef FILENAME_LEN |
| | | #define FILENAME_LEN 64 |
| | | #endif |
| | | |
| | | #define DEFAULT_LOGFILE "logger.log" |
| | | #define DBG_LOG_FILE "console" /* Debug mode log file is console */ |
| | | |
| | | #define LOG_ROLLBACK_SIZE 512 /* Default rollback log size */ |
| | | #define LOG_ROLLBACK_NONE 0 /* Set rollback size to 0 will not rollback */ |
| | | |
| | | #define MAX_LOG_MESSAGE_LEN 0x1000 |
| | | |
| | | //#define DUMPLICATE_OUTPUT /* Log to file and printf on console */ |
| | | #define LOG_FILE_LINE /* Log the file and line */ |
| | | |
| | | enum |
| | | { |
| | | LOG_LEVEL_DISB = 0, /* Disable "Debug" */ |
| | | LOG_LEVEL_FATAL, /* Debug Level "Fatal" */ |
| | | LOG_LEVEL_ERROR, /* Debug Level "ERROR" */ |
| | | LOG_LEVEL_WARN, /* Debug Level "warnning" */ |
| | | LOG_LEVEL_NRML, /* Debug Level "Normal" */ |
| | | LOG_LEVEL_DEBUG, /* Debug Level "Debug" */ |
| | | LOG_LEVEL_INFO, /* Debug Level "Information" */ |
| | | LOG_LEVEL_TRACE, /* Debug Level "Trace" */ |
| | | LOG_LEVEL_MAX, |
| | | }; |
| | | |
| | | #define LOGGER_CONSOLE 1<<1 |
| | | #define LOGGER_FILE 0<<1 |
| | | |
| | | #define LOGGER_LEVEL_OPT 1<<2 /* The log level is sepcified by the command option */ |
| | | typedef struct _st_logger |
| | | { |
| | | unsigned char flag; /* This logger pointer is malloc() or passed by argument */ |
| | | char file[FILENAME_LEN]; |
| | | int level; |
| | | int size; |
| | | |
| | | FILE *fp; |
| | | } st_logger; |
| | | |
| | | |
| | | /* log_size unit KB */ |
| | | extern int logger_init(char *filename, int level, int log_size); |
| | | extern int logger_reopen(void); |
| | | |
| | | extern void logger_term(void); |
| | | |
| | | extern void logger_comm(int level, char *fmt, ...); |
| | | extern void logger_line(int level, char *file, int line, char *fmt, ...); |
| | | |
| | | extern void logger_dump(int level, char *buf, int len); |
| | | |
| | | #ifdef LOG_FILE_LINE |
| | | #define log_trace(fmt, ...) logger_line(LOG_LEVEL_TRACE, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #define log_info(fmt, ...) logger_line(LOG_LEVEL_INFO, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #define log_dbg(fmt, ...) logger_line(LOG_LEVEL_DEBUG, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #define log_nrml(fmt, ...) logger_line(LOG_LEVEL_NRML, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #define log_warn(fmt, ...) logger_line(LOG_LEVEL_WARN, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #define log_err(fmt, ...) logger_line(LOG_LEVEL_ERROR, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #define log_fatal(fmt, ...) logger_line(LOG_LEVEL_FATAL, __FILE__, __LINE__, fmt, ##__VA_ARGS__) |
| | | #else |
| | | #define log_trace(fmt, ...) logger_comm(LOG_LEVEL_TRACE, fmt, ##__VA_ARGS__) |
| | | #define log_info(fmt, ...) logger_comm(tLOG_LEVEL_INFO, fmt, ##__VA_ARGS__) |
| | | #define log_dbg(fmt, ...) logger_comm(LOG_LEVEL_DEBUG, fmt, ##__VA_ARGS__) |
| | | #define log_nrml(fmt, ...) logger_comm(LOG_LEVEL_NRML, fmt, ##__VA_ARGS__) |
| | | #define log_warn(fmt, ...) logger_comm(LOG_LEVEL_WARN, fmt, ##__VA_ARGS__) |
| | | #define log_err(fmt, ...) logger_comm(LOG_LEVEL_ERROR, fmt, ##__VA_ARGS__) |
| | | #define log_fatal(fmt, ...) logger_comm(LOG_LEVEL_FATAL, fmt, ##__VA_ARGS__) |
| | | #endif |
| | | |
| | | |
| | | #endif /* __LOGGER_H_ */ |
New file |
| | |
| | | |
| | | CC=gcc |
| | | |
| | | all: prepare ddns_client ddns_server |
| | | @echo "Compile Done!" |
| | | |
| | | prepare: |
| | | @make clean |
| | | |
| | | ddns_client: ddns_client.c ini_dictionary.c iniparser.c |
| | | ${CC} $^ -o $@ |
| | | |
| | | ddns_server: ddns_server.c logger.c |
| | | ${CC} $^ -o $@ |
| | | |
| | | |
| | | clean: |
| | | @rm -f ddns_client ddns_server |
| | | @rm -f *.o |
| | | |
| | | distclean: clean |
| | | @rm -f tags cscope.* |