New file |
| | |
| | | /***************************************************************************/ |
| | | /* */ |
| | | /* ftplib.c - callable ftp access routines */ |
| | | /* Copyright (C) 1996-2001 Thomas Pfau, pfau@eclipse.net */ |
| | | /* 1407 Thomas Ave, North Brunswick, NJ, 08902 */ |
| | | /* */ |
| | | /* This library is free software; you can redistribute it and/or */ |
| | | /* modify it under the terms of the GNU Library General Public */ |
| | | /* License as published by the Free Software Foundation; either */ |
| | | /* version 2 of the License, or (at your option) any later version. */ |
| | | /* */ |
| | | /* This library is distributed in the hope that it will be useful, */ |
| | | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
| | | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */ |
| | | /* Library General Public License for more details. */ |
| | | /* */ |
| | | /* You should have received a copy of the GNU Library General Public */ |
| | | /* License along with this progam; if not, write to the */ |
| | | /* Free Software Foundation, Inc., 59 Temple Place - Suite 330, */ |
| | | /* Boston, MA 02111-1307, USA. */ |
| | | /* */ |
| | | /***************************************************************************/ |
| | | |
| | | #if defined(__unix__) || defined(__VMS) |
| | | #include <unistd.h> |
| | | #endif |
| | | #if defined(_WIN32) |
| | | #include <windows.h> |
| | | #endif |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <errno.h> |
| | | #include <ctype.h> |
| | | #if defined(__unix__) |
| | | #include <sys/time.h> |
| | | #include <sys/types.h> |
| | | #include <sys/socket.h> |
| | | #include <netinet/in.h> |
| | | #include <netdb.h> |
| | | #include <arpa/inet.h> |
| | | #elif defined(VMS) |
| | | #include <types.h> |
| | | #include <socket.h> |
| | | #include <in.h> |
| | | #include <netdb.h> |
| | | #include <inet.h> |
| | | #elif defined(_WIN32) |
| | | #include <winsock.h> |
| | | #endif |
| | | |
| | | #define BUILDING_LIBRARY |
| | | #include "ftplib.h" |
| | | |
| | | #if defined(_WIN32) |
| | | #define SETSOCKOPT_OPTVAL_TYPE (const char *) |
| | | #else |
| | | #define SETSOCKOPT_OPTVAL_TYPE (void *) |
| | | #endif |
| | | |
| | | #define FTPLIB_BUFSIZ 8192 |
| | | #define ACCEPT_TIMEOUT 30 |
| | | |
| | | #define FTPLIB_CONTROL 0 |
| | | #define FTPLIB_READ 1 |
| | | #define FTPLIB_WRITE 2 |
| | | |
| | | #if !defined FTPLIB_DEFMODE |
| | | #define FTPLIB_DEFMODE FTPLIB_PASSIVE |
| | | #endif |
| | | |
| | | struct NetBuf { |
| | | char *cput,*cget; |
| | | int handle; |
| | | int cavail,cleft; |
| | | char *buf; |
| | | int dir; |
| | | netbuf *ctrl; |
| | | netbuf *data; |
| | | int cmode; |
| | | struct timeval idletime; |
| | | FtpCallback idlecb; |
| | | void *idlearg; |
| | | int xfered; |
| | | int cbbytes; |
| | | int xfered1; |
| | | char response[256]; |
| | | }; |
| | | |
| | | static char *version = |
| | | "ftplib Release 3.1-1 9/16/00, copyright 1996-2000 Thomas Pfau"; |
| | | |
| | | GLOBALDEF int ftplib_debug = 0; |
| | | |
| | | #if defined(__unix__) || defined(VMS) |
| | | #define net_read read |
| | | #define net_write write |
| | | #define net_close close |
| | | #elif defined(_WIN32) |
| | | #define net_read(x,y,z) recv(x,y,z,0) |
| | | #define net_write(x,y,z) send(x,y,z,0) |
| | | #define net_close closesocket |
| | | #endif |
| | | |
| | | #if defined(NEED_MEMCCPY) |
| | | /* |
| | | * VAX C does not supply a memccpy routine so I provide my own |
| | | */ |
| | | void *memccpy(void *dest, const void *src, int c, size_t n) |
| | | { |
| | | int i=0; |
| | | const unsigned char *ip=src; |
| | | unsigned char *op=dest; |
| | | |
| | | while (i < n) |
| | | { |
| | | if ((*op++ = *ip++) == c) |
| | | break; |
| | | i++; |
| | | } |
| | | if (i == n) |
| | | return NULL; |
| | | return op; |
| | | } |
| | | #endif |
| | | #if defined(NEED_STRDUP) |
| | | /* |
| | | * strdup - return a malloc'ed copy of a string |
| | | */ |
| | | char *strdup(const char *src) |
| | | { |
| | | int l = strlen(src) + 1; |
| | | char *dst = malloc(l); |
| | | if (dst) |
| | | strcpy(dst,src); |
| | | return dst; |
| | | } |
| | | #endif |
| | | |
| | | /* |
| | | * socket_wait - wait for socket to receive or flush data |
| | | * |
| | | * return 1 if no user callback, otherwise, return value returned by |
| | | * user callback |
| | | */ |
| | | static int socket_wait(netbuf *ctl) |
| | | { |
| | | fd_set fd,*rfd = NULL,*wfd = NULL; |
| | | struct timeval tv; |
| | | int rv = 0; |
| | | if ((ctl->dir == FTPLIB_CONTROL) || (ctl->idlecb == NULL)) |
| | | return 1; |
| | | if (ctl->dir == FTPLIB_WRITE) |
| | | wfd = &fd; |
| | | else |
| | | rfd = &fd; |
| | | FD_ZERO(&fd); |
| | | do |
| | | { |
| | | FD_SET(ctl->handle,&fd); |
| | | tv = ctl->idletime; |
| | | rv = select(ctl->handle+1, rfd, wfd, NULL, &tv); |
| | | if (rv == -1) |
| | | { |
| | | rv = 0; |
| | | strncpy(ctl->ctrl->response, strerror(errno), |
| | | sizeof(ctl->ctrl->response)); |
| | | break; |
| | | } |
| | | else if (rv > 0) |
| | | { |
| | | rv = 1; |
| | | break; |
| | | } |
| | | } |
| | | while ((rv = ctl->idlecb(ctl, ctl->xfered, ctl->idlearg))); |
| | | return rv; |
| | | } |
| | | |
| | | /* |
| | | * read a line of text |
| | | * |
| | | * return -1 on error or bytecount |
| | | */ |
| | | static int readline(char *buf,int max,netbuf *ctl) |
| | | { |
| | | int x,retval = 0; |
| | | char *end,*bp=buf; |
| | | int eof = 0; |
| | | |
| | | if ((ctl->dir != FTPLIB_CONTROL) && (ctl->dir != FTPLIB_READ)) |
| | | return -1; |
| | | if (max == 0) |
| | | return 0; |
| | | do |
| | | { |
| | | if (ctl->cavail > 0) |
| | | { |
| | | x = (max >= ctl->cavail) ? ctl->cavail : max-1; |
| | | end = memccpy(bp,ctl->cget,'\n',x); |
| | | if (end != NULL) |
| | | x = end - bp; |
| | | retval += x; |
| | | bp += x; |
| | | *bp = '\0'; |
| | | max -= x; |
| | | ctl->cget += x; |
| | | ctl->cavail -= x; |
| | | if (end != NULL) |
| | | { |
| | | bp -= 2; |
| | | if (strcmp(bp,"\r\n") == 0) |
| | | { |
| | | *bp++ = '\n'; |
| | | *bp++ = '\0'; |
| | | --retval; |
| | | } |
| | | break; |
| | | } |
| | | } |
| | | if (max == 1) |
| | | { |
| | | *buf = '\0'; |
| | | break; |
| | | } |
| | | if (ctl->cput == ctl->cget) |
| | | { |
| | | ctl->cput = ctl->cget = ctl->buf; |
| | | ctl->cavail = 0; |
| | | ctl->cleft = FTPLIB_BUFSIZ; |
| | | } |
| | | if (eof) |
| | | { |
| | | if (retval == 0) |
| | | retval = -1; |
| | | break; |
| | | } |
| | | if (!socket_wait(ctl)) |
| | | return retval; |
| | | if ((x = net_read(ctl->handle,ctl->cput,ctl->cleft)) == -1) |
| | | { |
| | | perror("read"); |
| | | retval = -1; |
| | | break; |
| | | } |
| | | if (x == 0) |
| | | eof = 1; |
| | | ctl->cleft -= x; |
| | | ctl->cavail += x; |
| | | ctl->cput += x; |
| | | } |
| | | while (1); |
| | | return retval; |
| | | } |
| | | |
| | | /* |
| | | * write lines of text |
| | | * |
| | | * return -1 on error or bytecount |
| | | */ |
| | | static int writeline(char *buf, int len, netbuf *nData) |
| | | { |
| | | int x, nb=0, w; |
| | | char *ubp = buf, *nbp; |
| | | char lc=0; |
| | | |
| | | if (nData->dir != FTPLIB_WRITE) |
| | | return -1; |
| | | nbp = nData->buf; |
| | | for (x=0; x < len; x++) |
| | | { |
| | | if ((*ubp == '\n') && (lc != '\r')) |
| | | { |
| | | if (nb == FTPLIB_BUFSIZ) |
| | | { |
| | | if (!socket_wait(nData)) |
| | | return x; |
| | | w = net_write(nData->handle, nbp, FTPLIB_BUFSIZ); |
| | | if (w != FTPLIB_BUFSIZ) |
| | | { |
| | | printf("net_write(1) returned %d, errno = %d\n", w, errno); |
| | | return(-1); |
| | | } |
| | | nb = 0; |
| | | } |
| | | nbp[nb++] = '\r'; |
| | | } |
| | | if (nb == FTPLIB_BUFSIZ) |
| | | { |
| | | if (!socket_wait(nData)) |
| | | return x; |
| | | w = net_write(nData->handle, nbp, FTPLIB_BUFSIZ); |
| | | if (w != FTPLIB_BUFSIZ) |
| | | { |
| | | printf("net_write(2) returned %d, errno = %d\n", w, errno); |
| | | return(-1); |
| | | } |
| | | nb = 0; |
| | | } |
| | | nbp[nb++] = lc = *ubp++; |
| | | } |
| | | if (nb) |
| | | { |
| | | if (!socket_wait(nData)) |
| | | return x; |
| | | w = net_write(nData->handle, nbp, nb); |
| | | if (w != nb) |
| | | { |
| | | printf("net_write(3) returned %d, errno = %d\n", w, errno); |
| | | return(-1); |
| | | } |
| | | } |
| | | return len; |
| | | } |
| | | |
| | | /* |
| | | * read a response from the server |
| | | * |
| | | * return 0 if first char doesn't match |
| | | * return 1 if first char matches |
| | | */ |
| | | static int readresp(char c, netbuf *nControl) |
| | | { |
| | | char match[5]; |
| | | if (readline(nControl->response,256,nControl) == -1) |
| | | { |
| | | perror("Control socket read failed"); |
| | | return 0; |
| | | } |
| | | if (ftplib_debug > 1) |
| | | fprintf(stderr,"%s",nControl->response); |
| | | if (nControl->response[3] == '-') |
| | | { |
| | | strncpy(match,nControl->response,3); |
| | | match[3] = ' '; |
| | | match[4] = '\0'; |
| | | do |
| | | { |
| | | if (readline(nControl->response,256,nControl) == -1) |
| | | { |
| | | perror("Control socket read failed"); |
| | | return 0; |
| | | } |
| | | if (ftplib_debug > 1) |
| | | fprintf(stderr,"%s",nControl->response); |
| | | } |
| | | while (strncmp(nControl->response,match,4)); |
| | | } |
| | | if (nControl->response[0] == c) |
| | | return 1; |
| | | return 0; |
| | | } |
| | | |
| | | /* |
| | | * FtpInit for stupid operating systems that require it (Windows NT) |
| | | */ |
| | | GLOBALDEF void FtpInit(void) |
| | | { |
| | | #if defined(_WIN32) |
| | | WORD wVersionRequested; |
| | | WSADATA wsadata; |
| | | int err; |
| | | wVersionRequested = MAKEWORD(1,1); |
| | | if ((err = WSAStartup(wVersionRequested,&wsadata)) != 0) |
| | | fprintf(stderr,"Network failed to start: %d\n",err); |
| | | #endif |
| | | } |
| | | |
| | | /* |
| | | * FtpLastResponse - return a pointer to the last response received |
| | | */ |
| | | GLOBALDEF char *FtpLastResponse(netbuf *nControl) |
| | | { |
| | | if ((nControl) && (nControl->dir == FTPLIB_CONTROL)) |
| | | return nControl->response; |
| | | return NULL; |
| | | } |
| | | |
| | | /* |
| | | * FtpConnect - connect to remote server |
| | | * |
| | | * return 1 if connected, 0 if not |
| | | */ |
| | | GLOBALDEF int FtpConnect(const char *host, netbuf **nControl) |
| | | { |
| | | int sControl; |
| | | struct sockaddr_in sin; |
| | | struct hostent *phe; |
| | | struct servent *pse; |
| | | int on=1; |
| | | netbuf *ctrl; |
| | | char *lhost; |
| | | char *pnum; |
| | | |
| | | memset(&sin,0,sizeof(sin)); |
| | | sin.sin_family = AF_INET; |
| | | lhost = strdup(host); |
| | | pnum = strchr(lhost,':'); |
| | | if (pnum == NULL) |
| | | { |
| | | #if defined(VMS) |
| | | sin.sin_port = htons(21); |
| | | #else |
| | | if ((pse = getservbyname("ftp","tcp")) == NULL) |
| | | { |
| | | perror("getservbyname"); |
| | | return 0; |
| | | } |
| | | sin.sin_port = pse->s_port; |
| | | #endif |
| | | } |
| | | else |
| | | { |
| | | *pnum++ = '\0'; |
| | | if (isdigit(*pnum)) |
| | | sin.sin_port = htons((short)atoi(pnum)); |
| | | else |
| | | { |
| | | pse = getservbyname(pnum,"tcp"); |
| | | sin.sin_port = pse->s_port; |
| | | } |
| | | } |
| | | if ((sin.sin_addr.s_addr = inet_addr(lhost)) == -1) |
| | | { |
| | | if ((phe = gethostbyname(lhost)) == NULL) |
| | | { |
| | | perror("gethostbyname"); |
| | | return 0; |
| | | } |
| | | memcpy((char *)&sin.sin_addr, phe->h_addr, phe->h_length); |
| | | } |
| | | free(lhost); |
| | | sControl = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); |
| | | if (sControl == -1) |
| | | { |
| | | perror("socket"); |
| | | return 0; |
| | | } |
| | | if (setsockopt(sControl,SOL_SOCKET,SO_REUSEADDR, |
| | | SETSOCKOPT_OPTVAL_TYPE &on, sizeof(on)) == -1) |
| | | { |
| | | perror("setsockopt"); |
| | | net_close(sControl); |
| | | return 0; |
| | | } |
| | | if (connect(sControl, (struct sockaddr *)&sin, sizeof(sin)) == -1) |
| | | { |
| | | perror("connect"); |
| | | net_close(sControl); |
| | | return 0; |
| | | } |
| | | ctrl = calloc(1,sizeof(netbuf)); |
| | | if (ctrl == NULL) |
| | | { |
| | | perror("calloc"); |
| | | net_close(sControl); |
| | | return 0; |
| | | } |
| | | ctrl->buf = malloc(FTPLIB_BUFSIZ); |
| | | if (ctrl->buf == NULL) |
| | | { |
| | | perror("calloc"); |
| | | net_close(sControl); |
| | | free(ctrl); |
| | | return 0; |
| | | } |
| | | ctrl->handle = sControl; |
| | | ctrl->dir = FTPLIB_CONTROL; |
| | | ctrl->ctrl = NULL; |
| | | ctrl->cmode = FTPLIB_DEFMODE; |
| | | ctrl->idlecb = NULL; |
| | | ctrl->idletime.tv_sec = ctrl->idletime.tv_usec = 0; |
| | | ctrl->idlearg = NULL; |
| | | ctrl->xfered = 0; |
| | | ctrl->xfered1 = 0; |
| | | ctrl->cbbytes = 0; |
| | | if (readresp('2', ctrl) == 0) |
| | | { |
| | | net_close(sControl); |
| | | free(ctrl->buf); |
| | | free(ctrl); |
| | | return 0; |
| | | } |
| | | *nControl = ctrl; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpOptions - change connection options |
| | | * |
| | | * returns 1 if successful, 0 on error |
| | | */ |
| | | GLOBALDEF int FtpOptions(int opt, long val, netbuf *nControl) |
| | | { |
| | | int v,rv=0; |
| | | switch (opt) |
| | | { |
| | | case FTPLIB_CONNMODE: |
| | | v = (int) val; |
| | | if ((v == FTPLIB_PASSIVE) || (v == FTPLIB_PORT)) |
| | | { |
| | | nControl->cmode = v; |
| | | rv = 1; |
| | | } |
| | | break; |
| | | case FTPLIB_CALLBACK: |
| | | nControl->idlecb = (FtpCallback) val; |
| | | rv = 1; |
| | | break; |
| | | case FTPLIB_IDLETIME: |
| | | v = (int) val; |
| | | rv = 1; |
| | | nControl->idletime.tv_sec = v / 1000; |
| | | nControl->idletime.tv_usec = (v % 1000) * 1000; |
| | | break; |
| | | case FTPLIB_CALLBACKARG: |
| | | rv = 1; |
| | | nControl->idlearg = (void *) val; |
| | | break; |
| | | case FTPLIB_CALLBACKBYTES: |
| | | rv = 1; |
| | | nControl->cbbytes = (int) val; |
| | | break; |
| | | } |
| | | return rv; |
| | | } |
| | | |
| | | /* |
| | | * FtpSendCmd - send a command and wait for expected response |
| | | * |
| | | * return 1 if proper response received, 0 otherwise |
| | | */ |
| | | static int FtpSendCmd(const char *cmd, char expresp, netbuf *nControl) |
| | | { |
| | | char buf[256]; |
| | | if (nControl->dir != FTPLIB_CONTROL) |
| | | return 0; |
| | | if (ftplib_debug > 2) |
| | | fprintf(stderr,"%s\n",cmd); |
| | | if ((strlen(cmd) + 3) > sizeof(buf)) |
| | | return 0; |
| | | sprintf(buf,"%s\r\n",cmd); |
| | | if (net_write(nControl->handle,buf,strlen(buf)) <= 0) |
| | | { |
| | | perror("write"); |
| | | return 0; |
| | | } |
| | | return readresp(expresp, nControl); |
| | | } |
| | | |
| | | /* |
| | | * FtpLogin - log in to remote server |
| | | * |
| | | * return 1 if logged in, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpLogin(const char *user, const char *pass, netbuf *nControl) |
| | | { |
| | | char tempbuf[64]; |
| | | |
| | | if (((strlen(user) + 7) > sizeof(tempbuf)) || |
| | | ((strlen(pass) + 7) > sizeof(tempbuf))) |
| | | return 0; |
| | | sprintf(tempbuf,"USER %s",user); |
| | | if (!FtpSendCmd(tempbuf,'3',nControl)) |
| | | { |
| | | if (nControl->response[0] == '2') |
| | | return 1; |
| | | return 0; |
| | | } |
| | | sprintf(tempbuf,"PASS %s",pass); |
| | | return FtpSendCmd(tempbuf,'2',nControl); |
| | | } |
| | | |
| | | /* |
| | | * FtpOpenPort - set up data connection |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | static int FtpOpenPort(netbuf *nControl, netbuf **nData, int mode, int dir) |
| | | { |
| | | int sData; |
| | | union { |
| | | struct sockaddr sa; |
| | | struct sockaddr_in in; |
| | | } sin; |
| | | struct linger lng = { 0, 0 }; |
| | | unsigned int l; |
| | | int on=1; |
| | | netbuf *ctrl; |
| | | char *cp; |
| | | unsigned int v[6]; |
| | | char buf[256]; |
| | | |
| | | if (nControl->dir != FTPLIB_CONTROL) |
| | | return -1; |
| | | if ((dir != FTPLIB_READ) && (dir != FTPLIB_WRITE)) |
| | | { |
| | | sprintf(nControl->response, "Invalid direction %d\n", dir); |
| | | return -1; |
| | | } |
| | | if ((mode != FTPLIB_ASCII) && (mode != FTPLIB_IMAGE)) |
| | | { |
| | | sprintf(nControl->response, "Invalid mode %c\n", mode); |
| | | return -1; |
| | | } |
| | | l = sizeof(sin); |
| | | if (nControl->cmode == FTPLIB_PASSIVE) |
| | | { |
| | | memset(&sin, 0, l); |
| | | sin.in.sin_family = AF_INET; |
| | | if (!FtpSendCmd("PASV",'2',nControl)) |
| | | return -1; |
| | | cp = strchr(nControl->response,'('); |
| | | if (cp == NULL) |
| | | return -1; |
| | | cp++; |
| | | sscanf(cp,"%u,%u,%u,%u,%u,%u",&v[2],&v[3],&v[4],&v[5],&v[0],&v[1]); |
| | | sin.sa.sa_data[2] = v[2]; |
| | | sin.sa.sa_data[3] = v[3]; |
| | | sin.sa.sa_data[4] = v[4]; |
| | | sin.sa.sa_data[5] = v[5]; |
| | | sin.sa.sa_data[0] = v[0]; |
| | | sin.sa.sa_data[1] = v[1]; |
| | | } |
| | | else |
| | | { |
| | | if (getsockname(nControl->handle, &sin.sa, &l) < 0) |
| | | { |
| | | perror("getsockname"); |
| | | return 0; |
| | | } |
| | | } |
| | | sData = socket(PF_INET,SOCK_STREAM,IPPROTO_TCP); |
| | | if (sData == -1) |
| | | { |
| | | perror("socket"); |
| | | return -1; |
| | | } |
| | | if (setsockopt(sData,SOL_SOCKET,SO_REUSEADDR, |
| | | SETSOCKOPT_OPTVAL_TYPE &on,sizeof(on)) == -1) |
| | | { |
| | | perror("setsockopt"); |
| | | net_close(sData); |
| | | return -1; |
| | | } |
| | | if (setsockopt(sData,SOL_SOCKET,SO_LINGER, |
| | | SETSOCKOPT_OPTVAL_TYPE &lng,sizeof(lng)) == -1) |
| | | { |
| | | perror("setsockopt"); |
| | | net_close(sData); |
| | | return -1; |
| | | } |
| | | if (nControl->cmode == FTPLIB_PASSIVE) |
| | | { |
| | | if (connect(sData, &sin.sa, sizeof(sin.sa)) == -1) |
| | | { |
| | | perror("connect"); |
| | | net_close(sData); |
| | | return -1; |
| | | } |
| | | } |
| | | else |
| | | { |
| | | sin.in.sin_port = 0; |
| | | if (bind(sData, &sin.sa, sizeof(sin)) == -1) |
| | | { |
| | | perror("bind"); |
| | | net_close(sData); |
| | | return 0; |
| | | } |
| | | if (listen(sData, 1) < 0) |
| | | { |
| | | perror("listen"); |
| | | net_close(sData); |
| | | return 0; |
| | | } |
| | | if (getsockname(sData, &sin.sa, &l) < 0) |
| | | return 0; |
| | | sprintf(buf, "PORT %d,%d,%d,%d,%d,%d", |
| | | (unsigned char) sin.sa.sa_data[2], |
| | | (unsigned char) sin.sa.sa_data[3], |
| | | (unsigned char) sin.sa.sa_data[4], |
| | | (unsigned char) sin.sa.sa_data[5], |
| | | (unsigned char) sin.sa.sa_data[0], |
| | | (unsigned char) sin.sa.sa_data[1]); |
| | | if (!FtpSendCmd(buf,'2',nControl)) |
| | | { |
| | | net_close(sData); |
| | | return 0; |
| | | } |
| | | } |
| | | ctrl = calloc(1,sizeof(netbuf)); |
| | | if (ctrl == NULL) |
| | | { |
| | | perror("calloc"); |
| | | net_close(sData); |
| | | return -1; |
| | | } |
| | | if ((mode == 'A') && ((ctrl->buf = malloc(FTPLIB_BUFSIZ)) == NULL)) |
| | | { |
| | | perror("calloc"); |
| | | net_close(sData); |
| | | free(ctrl); |
| | | return -1; |
| | | } |
| | | ctrl->handle = sData; |
| | | ctrl->dir = dir; |
| | | ctrl->idletime = nControl->idletime; |
| | | ctrl->idlearg = nControl->idlearg; |
| | | ctrl->xfered = 0; |
| | | ctrl->xfered1 = 0; |
| | | ctrl->cbbytes = nControl->cbbytes; |
| | | if (ctrl->idletime.tv_sec || ctrl->idletime.tv_usec || ctrl->cbbytes) |
| | | ctrl->idlecb = nControl->idlecb; |
| | | else |
| | | ctrl->idlecb = NULL; |
| | | *nData = ctrl; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpAcceptConnection - accept connection from server |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | static int FtpAcceptConnection(netbuf *nData, netbuf *nControl) |
| | | { |
| | | int sData; |
| | | struct sockaddr addr; |
| | | unsigned int l; |
| | | int i; |
| | | struct timeval tv; |
| | | fd_set mask; |
| | | int rv; |
| | | |
| | | FD_ZERO(&mask); |
| | | FD_SET(nControl->handle, &mask); |
| | | FD_SET(nData->handle, &mask); |
| | | tv.tv_usec = 0; |
| | | tv.tv_sec = ACCEPT_TIMEOUT; |
| | | i = nControl->handle; |
| | | if (i < nData->handle) |
| | | i = nData->handle; |
| | | i = select(i+1, &mask, NULL, NULL, &tv); |
| | | if (i == -1) |
| | | { |
| | | strncpy(nControl->response, strerror(errno), |
| | | sizeof(nControl->response)); |
| | | net_close(nData->handle); |
| | | nData->handle = 0; |
| | | rv = 0; |
| | | } |
| | | else if (i == 0) |
| | | { |
| | | strcpy(nControl->response, "timed out waiting for connection"); |
| | | net_close(nData->handle); |
| | | nData->handle = 0; |
| | | rv = 0; |
| | | } |
| | | else |
| | | { |
| | | if (FD_ISSET(nData->handle, &mask)) |
| | | { |
| | | l = sizeof(addr); |
| | | sData = accept(nData->handle, &addr, &l); |
| | | i = errno; |
| | | net_close(nData->handle); |
| | | if (sData > 0) |
| | | { |
| | | rv = 1; |
| | | nData->handle = sData; |
| | | } |
| | | else |
| | | { |
| | | strncpy(nControl->response, strerror(i), |
| | | sizeof(nControl->response)); |
| | | nData->handle = 0; |
| | | rv = 0; |
| | | } |
| | | } |
| | | else if (FD_ISSET(nControl->handle, &mask)) |
| | | { |
| | | net_close(nData->handle); |
| | | nData->handle = 0; |
| | | readresp('2', nControl); |
| | | rv = 0; |
| | | } |
| | | } |
| | | return rv; |
| | | } |
| | | |
| | | /* |
| | | * FtpAccess - return a handle for a data stream |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpAccess(const char *path, int typ, int mode, netbuf *nControl, |
| | | netbuf **nData) |
| | | { |
| | | char buf[256]; |
| | | int dir; |
| | | if ((path == NULL) && |
| | | ((typ == FTPLIB_FILE_WRITE) || (typ == FTPLIB_FILE_READ))) |
| | | { |
| | | sprintf(nControl->response, |
| | | "Missing path argument for file transfer\n"); |
| | | return 0; |
| | | } |
| | | sprintf(buf, "TYPE %c", mode); |
| | | if (!FtpSendCmd(buf, '2', nControl)) |
| | | return 0; |
| | | switch (typ) |
| | | { |
| | | case FTPLIB_DIR: |
| | | strcpy(buf,"NLST"); |
| | | dir = FTPLIB_READ; |
| | | break; |
| | | case FTPLIB_DIR_VERBOSE: |
| | | strcpy(buf,"LIST"); |
| | | dir = FTPLIB_READ; |
| | | break; |
| | | case FTPLIB_FILE_READ: |
| | | strcpy(buf,"RETR"); |
| | | dir = FTPLIB_READ; |
| | | break; |
| | | case FTPLIB_FILE_WRITE: |
| | | strcpy(buf,"STOR"); |
| | | dir = FTPLIB_WRITE; |
| | | break; |
| | | default: |
| | | sprintf(nControl->response, "Invalid open type %d\n", typ); |
| | | return 0; |
| | | } |
| | | if (path != NULL) |
| | | { |
| | | int i = strlen(buf); |
| | | buf[i++] = ' '; |
| | | if ((strlen(path) + i) >= sizeof(buf)) |
| | | return 0; |
| | | strcpy(&buf[i],path); |
| | | } |
| | | if (FtpOpenPort(nControl, nData, mode, dir) == -1) |
| | | return 0; |
| | | if (!FtpSendCmd(buf, '1', nControl)) |
| | | { |
| | | FtpClose(*nData); |
| | | *nData = NULL; |
| | | return 0; |
| | | } |
| | | (*nData)->ctrl = nControl; |
| | | nControl->data = *nData; |
| | | if (nControl->cmode == FTPLIB_PORT) |
| | | { |
| | | if (!FtpAcceptConnection(*nData,nControl)) |
| | | { |
| | | FtpClose(*nData); |
| | | *nData = NULL; |
| | | nControl->data = NULL; |
| | | return 0; |
| | | } |
| | | } |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpRead - read from a data connection |
| | | */ |
| | | GLOBALDEF int FtpRead(void *buf, int max, netbuf *nData) |
| | | { |
| | | int i; |
| | | if (nData->dir != FTPLIB_READ) |
| | | return 0; |
| | | if (nData->buf) |
| | | i = readline(buf, max, nData); |
| | | else |
| | | { |
| | | i = socket_wait(nData); |
| | | if (i != 1) |
| | | return 0; |
| | | i = net_read(nData->handle, buf, max); |
| | | } |
| | | if (i == -1) |
| | | return 0; |
| | | nData->xfered += i; |
| | | if (nData->idlecb && nData->cbbytes) |
| | | { |
| | | nData->xfered1 += i; |
| | | if (nData->xfered1 > nData->cbbytes) |
| | | { |
| | | if (nData->idlecb(nData, nData->xfered, nData->idlearg) == 0) |
| | | return 0; |
| | | nData->xfered1 = 0; |
| | | } |
| | | } |
| | | return i; |
| | | } |
| | | |
| | | /* |
| | | * FtpWrite - write to a data connection |
| | | */ |
| | | GLOBALDEF int FtpWrite(void *buf, int len, netbuf *nData) |
| | | { |
| | | int i; |
| | | if (nData->dir != FTPLIB_WRITE) |
| | | return 0; |
| | | if (nData->buf) |
| | | i = writeline(buf, len, nData); |
| | | else |
| | | { |
| | | socket_wait(nData); |
| | | i = net_write(nData->handle, buf, len); |
| | | } |
| | | if (i == -1) |
| | | return 0; |
| | | nData->xfered += i; |
| | | if (nData->idlecb && nData->cbbytes) |
| | | { |
| | | nData->xfered1 += i; |
| | | if (nData->xfered1 > nData->cbbytes) |
| | | { |
| | | nData->idlecb(nData, nData->xfered, nData->idlearg); |
| | | nData->xfered1 = 0; |
| | | } |
| | | } |
| | | return i; |
| | | } |
| | | |
| | | /* |
| | | * FtpClose - close a data connection |
| | | */ |
| | | GLOBALDEF int FtpClose(netbuf *nData) |
| | | { |
| | | netbuf *ctrl; |
| | | switch (nData->dir) |
| | | { |
| | | case FTPLIB_WRITE: |
| | | /* potential problem - if buffer flush fails, how to notify user? */ |
| | | if (nData->buf != NULL) |
| | | writeline(NULL, 0, nData); |
| | | case FTPLIB_READ: |
| | | if (nData->buf) |
| | | free(nData->buf); |
| | | shutdown(nData->handle,2); |
| | | net_close(nData->handle); |
| | | ctrl = nData->ctrl; |
| | | free(nData); |
| | | if (ctrl) |
| | | { |
| | | ctrl->data = NULL; |
| | | return(readresp('2', ctrl)); |
| | | } |
| | | return 1; |
| | | case FTPLIB_CONTROL: |
| | | if (nData->data) |
| | | { |
| | | nData->ctrl = NULL; |
| | | FtpClose(nData); |
| | | } |
| | | net_close(nData->handle); |
| | | free(nData); |
| | | return 0; |
| | | } |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpSite - send a SITE command |
| | | * |
| | | * return 1 if command successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpSite(const char *cmd, netbuf *nControl) |
| | | { |
| | | char buf[256]; |
| | | |
| | | if ((strlen(cmd) + 7) > sizeof(buf)) |
| | | return 0; |
| | | sprintf(buf,"SITE %s",cmd); |
| | | if (!FtpSendCmd(buf,'2',nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpSysType - send a SYST command |
| | | * |
| | | * Fills in the user buffer with the remote system type. If more |
| | | * information from the response is required, the user can parse |
| | | * it out of the response buffer returned by FtpLastResponse(). |
| | | * |
| | | * return 1 if command successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpSysType(char *buf, int max, netbuf *nControl) |
| | | { |
| | | int l = max; |
| | | char *b = buf; |
| | | char *s; |
| | | if (!FtpSendCmd("SYST",'2',nControl)) |
| | | return 0; |
| | | s = &nControl->response[4]; |
| | | while ((--l) && (*s != ' ')) |
| | | *b++ = *s++; |
| | | *b++ = '\0'; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpMkdir - create a directory at server |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpMkdir(const char *path, netbuf *nControl) |
| | | { |
| | | char buf[256]; |
| | | |
| | | if ((strlen(path) + 6) > sizeof(buf)) |
| | | return 0; |
| | | sprintf(buf,"MKD %s",path); |
| | | if (!FtpSendCmd(buf,'2', nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpChdir - change path at remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpChdir(const char *path, netbuf *nControl) |
| | | { |
| | | char buf[256]; |
| | | |
| | | if ((strlen(path) + 6) > sizeof(buf)) |
| | | return 0; |
| | | sprintf(buf,"CWD %s",path); |
| | | if (!FtpSendCmd(buf,'2',nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpCDUp - move to parent directory at remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpCDUp(netbuf *nControl) |
| | | { |
| | | if (!FtpSendCmd("CDUP",'2',nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpRmdir - remove directory at remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpRmdir(const char *path, netbuf *nControl) |
| | | { |
| | | char buf[256]; |
| | | |
| | | if ((strlen(path) + 6) > sizeof(buf)) |
| | | return 0; |
| | | sprintf(buf,"RMD %s",path); |
| | | if (!FtpSendCmd(buf,'2',nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpPwd - get working directory at remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpPwd(char *path, int max, netbuf *nControl) |
| | | { |
| | | int l = max; |
| | | char *b = path; |
| | | char *s; |
| | | if (!FtpSendCmd("PWD",'2',nControl)) |
| | | return 0; |
| | | s = strchr(nControl->response, '"'); |
| | | if (s == NULL) |
| | | return 0; |
| | | s++; |
| | | while ((--l) && (*s) && (*s != '"')) |
| | | *b++ = *s++; |
| | | *b++ = '\0'; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpXfer - issue a command and transfer data |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | static int FtpXfer(const char *localfile, const char *path, |
| | | netbuf *nControl, int typ, int mode) |
| | | { |
| | | int l,c; |
| | | char *dbuf; |
| | | FILE *local = NULL; |
| | | netbuf *nData; |
| | | int rv=1; |
| | | |
| | | if (localfile != NULL) |
| | | { |
| | | char ac[4] = "w"; |
| | | if (typ == FTPLIB_FILE_WRITE) |
| | | ac[0] = 'r'; |
| | | if (mode == FTPLIB_IMAGE) |
| | | ac[1] = 'b'; |
| | | local = fopen(localfile, ac); |
| | | if (local == NULL) |
| | | { |
| | | strncpy(nControl->response, strerror(errno), |
| | | sizeof(nControl->response)); |
| | | return 0; |
| | | } |
| | | } |
| | | if (local == NULL) |
| | | local = (typ == FTPLIB_FILE_WRITE) ? stdin : stdout; |
| | | if (!FtpAccess(path, typ, mode, nControl, &nData)) |
| | | return 0; |
| | | dbuf = malloc(FTPLIB_BUFSIZ); |
| | | if (typ == FTPLIB_FILE_WRITE) |
| | | { |
| | | while ((l = fread(dbuf, 1, FTPLIB_BUFSIZ, local)) > 0) |
| | | if ((c = FtpWrite(dbuf, l, nData)) < l) |
| | | { |
| | | printf("short write: passed %d, wrote %d\n", l, c); |
| | | rv = 0; |
| | | break; |
| | | } |
| | | } |
| | | else |
| | | { |
| | | while ((l = FtpRead(dbuf, FTPLIB_BUFSIZ, nData)) > 0) |
| | | if (fwrite(dbuf, 1, l, local) <= 0) |
| | | { |
| | | perror("localfile write"); |
| | | rv = 0; |
| | | break; |
| | | } |
| | | } |
| | | free(dbuf); |
| | | fflush(local); |
| | | if (localfile != NULL) |
| | | fclose(local); |
| | | FtpClose(nData); |
| | | return rv; |
| | | } |
| | | |
| | | /* |
| | | * FtpNlst - issue an NLST command and write response to output |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpNlst(const char *outputfile, const char *path, |
| | | netbuf *nControl) |
| | | { |
| | | return FtpXfer(outputfile, path, nControl, FTPLIB_DIR, FTPLIB_ASCII); |
| | | } |
| | | |
| | | /* |
| | | * FtpDir - issue a LIST command and write response to output |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpDir(const char *outputfile, const char *path, netbuf *nControl) |
| | | { |
| | | return FtpXfer(outputfile, path, nControl, FTPLIB_DIR_VERBOSE, FTPLIB_ASCII); |
| | | } |
| | | |
| | | /* |
| | | * FtpSize - determine the size of a remote file |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpSize(const char *path, int *size, char mode, netbuf *nControl) |
| | | { |
| | | char cmd[256]; |
| | | int resp,sz,rv=1; |
| | | |
| | | if ((strlen(path) + 7) > sizeof(cmd)) |
| | | return 0; |
| | | sprintf(cmd, "TYPE %c", mode); |
| | | if (!FtpSendCmd(cmd, '2', nControl)) |
| | | return 0; |
| | | sprintf(cmd,"SIZE %s",path); |
| | | if (!FtpSendCmd(cmd,'2',nControl)) |
| | | rv = 0; |
| | | else |
| | | { |
| | | if (sscanf(nControl->response, "%d %d", &resp, &sz) == 2) |
| | | *size = sz; |
| | | else |
| | | rv = 0; |
| | | } |
| | | return rv; |
| | | } |
| | | |
| | | /* |
| | | * FtpModDate - determine the modification date of a remote file |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpModDate(const char *path, char *dt, int max, netbuf *nControl) |
| | | { |
| | | char buf[256]; |
| | | int rv = 1; |
| | | |
| | | if ((strlen(path) + 7) > sizeof(buf)) |
| | | return 0; |
| | | sprintf(buf,"MDTM %s",path); |
| | | if (!FtpSendCmd(buf,'2',nControl)) |
| | | rv = 0; |
| | | else |
| | | strncpy(dt, &nControl->response[4], max); |
| | | return rv; |
| | | } |
| | | |
| | | /* |
| | | * FtpGet - issue a GET command and write received data to output |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpGet(const char *outputfile, const char *path, |
| | | char mode, netbuf *nControl) |
| | | { |
| | | return FtpXfer(outputfile, path, nControl, FTPLIB_FILE_READ, mode); |
| | | } |
| | | |
| | | /* |
| | | * FtpPut - issue a PUT command and send data from input |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpPut(const char *inputfile, const char *path, char mode, |
| | | netbuf *nControl) |
| | | { |
| | | return FtpXfer(inputfile, path, nControl, FTPLIB_FILE_WRITE, mode); |
| | | } |
| | | |
| | | /* |
| | | * FtpRename - rename a file at remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpRename(const char *src, const char *dst, netbuf *nControl) |
| | | { |
| | | char cmd[256]; |
| | | |
| | | if (((strlen(src) + 7) > sizeof(cmd)) || |
| | | ((strlen(dst) + 7) > sizeof(cmd))) |
| | | return 0; |
| | | sprintf(cmd,"RNFR %s",src); |
| | | if (!FtpSendCmd(cmd,'3',nControl)) |
| | | return 0; |
| | | sprintf(cmd,"RNTO %s",dst); |
| | | if (!FtpSendCmd(cmd,'2',nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpDelete - delete a file at remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF int FtpDelete(const char *fnm, netbuf *nControl) |
| | | { |
| | | char cmd[256]; |
| | | |
| | | if ((strlen(fnm) + 7) > sizeof(cmd)) |
| | | return 0; |
| | | sprintf(cmd,"DELE %s",fnm); |
| | | if (!FtpSendCmd(cmd,'2', nControl)) |
| | | return 0; |
| | | return 1; |
| | | } |
| | | |
| | | /* |
| | | * FtpQuit - disconnect from remote |
| | | * |
| | | * return 1 if successful, 0 otherwise |
| | | */ |
| | | GLOBALDEF void FtpQuit(netbuf *nControl) |
| | | { |
| | | if (nControl->dir != FTPLIB_CONTROL) |
| | | return; |
| | | FtpSendCmd("QUIT",'2',nControl); |
| | | net_close(nControl->handle); |
| | | free(nControl->buf); |
| | | free(nControl); |
| | | } |