diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ftp.c | 293 | ||||
| -rw-r--r-- | lib/ftp.h | 1 |
2 files changed, 124 insertions, 170 deletions
@@ -1446,22 +1446,30 @@ static CURLcode ftp_state_list(struct connectdata *conn) The other ftp_filemethods will CWD into dir/dir/ first and then just do LIST (in that case: nothing to do here) */ - char *cmd, *lstArg; - const char *inpath = ftp->path; - - lstArg = NULL; - if((data->set.ftp_filemethod == FTPFILE_NOCWD) && - inpath && inpath[0] && strchr(inpath, '/')) { - /* chop off the file part if format is dir/file - otherwise remove the trailing slash for dir/dir/ - and full paths like %2f/ except for / */ - size_t n = strrchr(inpath, '/') - inpath; - if(n == 0) - ++n; - - result = Curl_urldecode(data, inpath, n, &lstArg, NULL, TRUE); + char *lstArg = NULL; + char *cmd; + + if((data->set.ftp_filemethod == FTPFILE_NOCWD) && ftp->path) { + /* url-decode before evaluation: e.g. paths starting/ending with %2f */ + const char *slashPos = NULL; + char *rawPath = NULL; + result = Curl_urldecode(data, ftp->path, 0, &rawPath, NULL, TRUE); if(result) return result; + + slashPos = strrchr(rawPath, '/'); + if(slashPos) { + /* chop off the file part if format is dir/file otherwise remove + the trailing slash for dir/dir/ except for absolute path / */ + size_t n = slashPos - rawPath; + if(n == 0) + ++n; + + lstArg = rawPath; + lstArg[n] = '\0'; + } + else + free(rawPath); } cmd = aprintf("%s%s%s", @@ -1470,15 +1478,12 @@ static CURLcode ftp_state_list(struct connectdata *conn) (data->set.ftp_list_only?"NLST":"LIST"), lstArg? " ": "", lstArg? lstArg: ""); + free(lstArg); - if(!cmd) { - free(lstArg); + if(!cmd) return CURLE_OUT_OF_MEMORY; - } result = Curl_pp_sendf(&conn->proto.ftpc.pp, "%s", cmd); - - free(lstArg); free(cmd); if(result) @@ -3132,8 +3137,8 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status, ssize_t nread; int ftpcode; CURLcode result = CURLE_OK; - char *path = NULL; - size_t pathlen = 0; + char *rawPath = NULL; + size_t pathLen = 0; if(!ftp) return CURLE_OK; @@ -3181,8 +3186,8 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status, } if(!result) - /* get the "raw" path */ - result = Curl_urldecode(data, ftp->path, 0, &path, &pathlen, TRUE); + /* get the url-decoded "raw" path */ + result = Curl_urldecode(data, ftp->path, 0, &rawPath, &pathLen, TRUE); if(result) { /* We can limp along anyway (and should try to since we may already be in * the error path) */ @@ -3192,22 +3197,22 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status, ftpc->prevpath = NULL; /* no path remembering */ } else { /* remember working directory for connection reuse */ - if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (path[0] == '/')) - free(path); /* full path => no CWDs happened => keep ftpc->prevpath */ + if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (rawPath[0] == '/')) + free(rawPath); /* full path => no CWDs happened => keep ftpc->prevpath */ else { free(ftpc->prevpath); if(!ftpc->cwdfail) { if(data->set.ftp_filemethod == FTPFILE_NOCWD) - pathlen = 0; /* relative path => working directory is FTP home */ + pathLen = 0; /* relative path => working directory is FTP home */ else - pathlen -= ftpc->file?strlen(ftpc->file):0; /* file is url-decoded */ + pathLen -= ftpc->file?strlen(ftpc->file):0; /* file is url-decoded */ - path[pathlen] = '\0'; - ftpc->prevpath = path; + rawPath[pathLen] = '\0'; + ftpc->prevpath = rawPath; } else { - free(path); + free(rawPath); ftpc->prevpath = NULL; /* no path */ } } @@ -4087,192 +4092,142 @@ CURLcode ftp_parse_url_path(struct connectdata *conn) /* the ftp struct is already inited in ftp_connect() */ struct FTP *ftp = data->req.protop; struct ftp_conn *ftpc = &conn->proto.ftpc; - const char *slash_pos; /* position of the first '/' char in curpos */ - const char *path_to_use = ftp->path; - const char *cur_pos; - const char *filename = NULL; - char *path = NULL; - size_t pathlen = 0; + const char *slashPos = NULL; + const char *fileName = NULL; CURLcode result = CURLE_OK; - - cur_pos = path_to_use; /* current position in path. point at the begin of - next path component */ + char *rawPath = NULL; /* url-decoded "raw" path */ + size_t pathLen = 0; ftpc->ctl_valid = FALSE; ftpc->cwdfail = FALSE; - switch(data->set.ftp_filemethod) { - case FTPFILE_NOCWD: - /* fastest, but less standard-compliant */ - - /* - The best time to check whether the path is a file or directory is right - here. so: + /* url-decode ftp path before further evaluation */ + result = Curl_urldecode(data, ftp->path, 0, &rawPath, &pathLen, TRUE); + if(result) + return result; - the first condition in the if() right here, is there just in case - someone decides to set path to NULL one day - */ - if(path_to_use[0] && - (path_to_use[strlen(path_to_use) - 1] != '/') ) - filename = path_to_use; /* this is a full file path */ - /* - else { - ftpc->file is not used anywhere other than for operations on a file. - In other words, never for directory operations. - So we can safely leave filename as NULL here and use it as a - argument in dir/file decisions. - } - */ - break; + switch(data->set.ftp_filemethod) { + case FTPFILE_NOCWD: /* fastest, but less standard-compliant */ - case FTPFILE_SINGLECWD: - /* get the last slash */ - if(!path_to_use[0]) { - /* no dir, no file */ - ftpc->dirdepth = 0; + if((pathLen > 0) && (rawPath[pathLen - 1] != '/')) + fileName = rawPath; /* this is a full file path */ + /* + else: ftpc->file is not used anywhere other than for operations on + a file. In other words, never for directory operations. + So we can safely leave filename as NULL here and use it as a + argument in dir/file decisions. + */ break; - } - slash_pos = strrchr(cur_pos, '/'); - if(slash_pos || !*cur_pos) { - size_t dirlen = slash_pos-cur_pos; - ftpc->dirs = calloc(1, sizeof(ftpc->dirs[0])); - if(!ftpc->dirs) - return CURLE_OUT_OF_MEMORY; + case FTPFILE_SINGLECWD: + slashPos = strrchr(rawPath, '/'); + if(slashPos) { + /* get path before last slash, except for / */ + size_t dirlen = slashPos - rawPath; + if(dirlen == 0) + dirlen++; + + ftpc->dirs = calloc(1, sizeof(ftpc->dirs[0])); + if(!ftpc->dirs) { + free(rawPath); + return CURLE_OUT_OF_MEMORY; + } - if(!dirlen) - dirlen++; + ftpc->dirs[0] = calloc(1, dirlen + 1); + if(!ftpc->dirs[0]) { + free(rawPath); + return CURLE_OUT_OF_MEMORY; + } - result = Curl_urldecode(conn->data, slash_pos ? cur_pos : "/", - slash_pos ? dirlen : 1, - &ftpc->dirs[0], NULL, - TRUE); - if(result) { - freedirs(ftpc); - return result; + strncpy(ftpc->dirs[0], rawPath, dirlen); + ftpc->dirdepth = 1; /* we consider it to be a single dir */ + fileName = slashPos + 1; /* rest is file name */ } - ftpc->dirdepth = 1; /* we consider it to be a single dir */ - filename = slash_pos ? slash_pos + 1 : cur_pos; /* rest is file name */ - } - else - filename = cur_pos; /* this is a file name only */ - break; + else + fileName = rawPath; /* file name only (or empty) */ + break; - default: /* allow pretty much anything */ - case FTPFILE_MULTICWD: - ftpc->dirdepth = 0; - ftpc->diralloc = 5; /* default dir depth to allocate */ - ftpc->dirs = calloc(ftpc->diralloc, sizeof(ftpc->dirs[0])); - if(!ftpc->dirs) - return CURLE_OUT_OF_MEMORY; + default: /* allow pretty much anything */ + case FTPFILE_MULTICWD: { + /* current position: begin of next path component */ + const char *curPos = rawPath; + + int dirAlloc = 0; /* number of entries allocated for the 'dirs' array */ + const char *str = rawPath; + for(; *str != 0; ++str) + if (*str == '/') + ++dirAlloc; + + if(dirAlloc > 0) { + ftpc->dirs = calloc(dirAlloc, sizeof(ftpc->dirs[0])); + if(!ftpc->dirs) { + free(rawPath); + return CURLE_OUT_OF_MEMORY; + } + + /* parse the URL path into separate path components */ + while((slashPos = strchr(curPos, '/')) != NULL) { + size_t compLen = slashPos - curPos; + + /* path starts with a slash: add that as a directory */ + if((compLen == 0) && (ftpc->dirdepth == 0)) + ++compLen; - /* we have a special case for listing the root dir only */ - if(!strcmp(path_to_use, "/")) { - cur_pos++; /* make it point to the zero byte */ - ftpc->dirs[0] = strdup("/"); - ftpc->dirdepth++; - } - else { - /* parse the URL path into separate path components */ - while((slash_pos = strchr(cur_pos, '/')) != NULL) { - /* 1 or 0 pointer offset to indicate absolute directory */ - ssize_t absolute_dir = ((cur_pos - ftp->path > 0) && - (ftpc->dirdepth == 0))?1:0; - - /* seek out the next path component */ - if(slash_pos-cur_pos) { /* we skip empty path components, like "x//y" since the FTP command CWD requires a parameter and a non-existent parameter a) doesn't work on many servers and b) has no effect on the others. */ - size_t len = slash_pos - cur_pos + absolute_dir; - result = Curl_urldecode(conn->data, cur_pos - absolute_dir, len, - &ftpc->dirs[ftpc->dirdepth], NULL, - TRUE); - if(result) { - freedirs(ftpc); - return result; - } - } - else { - cur_pos = slash_pos + 1; /* jump to the rest of the string */ - if(!ftpc->dirdepth) { - /* path starts with a slash, add that as a directory */ - ftpc->dirs[ftpc->dirdepth] = strdup("/"); - if(!ftpc->dirs[ftpc->dirdepth++]) { /* run out of memory ... */ - failf(data, "no memory"); - freedirs(ftpc); + if(compLen > 0) { + char *comp = calloc(1, compLen + 1); + if(!comp) { + free(rawPath); return CURLE_OUT_OF_MEMORY; } + strncpy(comp, curPos, compLen); + ftpc->dirs[ftpc->dirdepth++] = comp; } - continue; - } - - cur_pos = slash_pos + 1; /* jump to the rest of the string */ - if(++ftpc->dirdepth >= ftpc->diralloc) { - /* enlarge array */ - char **bigger; - ftpc->diralloc *= 2; /* double the size each time */ - bigger = realloc(ftpc->dirs, ftpc->diralloc * sizeof(ftpc->dirs[0])); - if(!bigger) { - freedirs(ftpc); - return CURLE_OUT_OF_MEMORY; - } - ftpc->dirs = bigger; + curPos = slashPos + 1; } } + DEBUGASSERT(ftpc->dirdepth <= dirAlloc); + fileName = curPos; /* the rest is the file name (or empty) */ } - filename = cur_pos; /* the rest is the file name */ break; } /* switch */ - if(filename && *filename) { - result = Curl_urldecode(conn->data, filename, 0, &ftpc->file, NULL, TRUE); - - if(result) { - freedirs(ftpc); - return result; - } - } + if(fileName && *fileName) + ftpc->file = strdup(fileName); else - ftpc->file = NULL; /* instead of point to a zero byte, we make it a NULL - pointer */ + ftpc->file = NULL; /* instead of point to a zero byte, + we make it a NULL pointer */ if(data->set.upload && !ftpc->file && (ftp->transfer == FTPTRANSFER_BODY)) { /* We need a file name when uploading. Return error! */ failf(data, "Uploading to a URL without a file name!"); + free(rawPath); return CURLE_URL_MALFORMAT; } ftpc->cwddone = FALSE; /* default to not done */ - /* prevpath and ftpc->file are url-decoded so convert the input path - before we compare the strings */ - result = Curl_urldecode(conn->data, ftp->path, 0, &path, &pathlen, TRUE); - if(result) { - freedirs(ftpc); - return result; - } - - if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (path[0] == '/')) + if((data->set.ftp_filemethod == FTPFILE_NOCWD) && (rawPath[0] == '/')) ftpc->cwddone = TRUE; /* skip CWD for absolute paths */ else { /* newly created FTP connections are already in entry path */ - const char *oldpath = conn->bits.reuse ? ftpc->prevpath : ""; - if(oldpath) { + const char *oldPath = conn->bits.reuse ? ftpc->prevpath : ""; + if(oldPath) { + size_t n = pathLen; if(data->set.ftp_filemethod == FTPFILE_NOCWD) - pathlen = 0; /* CWD to entry for relative paths */ + n = 0; /* CWD to entry for relative paths */ else - pathlen -= ftpc->file?strlen(ftpc->file):0; - - path[pathlen] = '\0'; + n -= ftpc->file?strlen(ftpc->file):0; - if(!strcmp(path, oldpath)) { + if((strlen(oldPath) == n) && !strncmp(rawPath, oldPath, n)) { infof(data, "Request has same path as previous transfer\n"); ftpc->cwddone = TRUE; } } } - free(path); + free(rawPath); return CURLE_OK; } @@ -121,7 +121,6 @@ struct ftp_conn { char *entrypath; /* the PWD reply when we logged on */ char **dirs; /* realloc()ed array for path components */ int dirdepth; /* number of entries used in the 'dirs' array */ - int diralloc; /* number of entries allocated for the 'dirs' array */ char *file; /* url-decoded file name (or path) */ bool dont_check; /* Set to TRUE to prevent the final (post-transfer) file size and 226/250 status check. It should still |