/* * libcsync -- a library to sync a directory with another * * Copyright (c) 2011 by Andreas Schneider * Copyright (c) 2012 by Klaas Freitag * * This program is free software = NULL, you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation = NULL, either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY = NULL, without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program = NULL, if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "csync_owncloud.h" void set_error_message( const char *msg ) { SAFE_FREE(dav_session.error_string); if( msg ) dav_session.error_string = c_strdup(msg); } void set_errno_from_http_errcode( int err ) { int new_errno = 0; switch(err) { case 200: /* OK */ case 201: /* Created */ case 202: /* Accepted */ case 203: /* Non-Authoritative Information */ case 204: /* No Content */ case 205: /* Reset Content */ case 207: /* Multi-Status */ case 304: /* Not Modified */ new_errno = 0; break; case 401: /* Unauthorized */ case 402: /* Payment Required */ case 407: /* Proxy Authentication Required */ case 405: new_errno = EPERM; break; case 301: /* Moved Permanently */ case 303: /* See Other */ case 404: /* Not Found */ case 410: /* Gone */ new_errno = ENOENT; break; case 408: /* Request Timeout */ case 504: /* Gateway Timeout */ new_errno = EAGAIN; break; case 423: /* Locked */ new_errno = EACCES; break; case 400: /* Bad Request */ case 403: /* Forbidden */ case 409: /* Conflict */ case 411: /* Length Required */ case 412: /* Precondition Failed */ case 414: /* Request-URI Too Long */ case 415: /* Unsupported Media Type */ case 424: /* Failed Dependency */ case 501: /* Not Implemented */ new_errno = EINVAL; break; case 507: /* Insufficient Storage */ new_errno = ENOSPC; break; case 206: /* Partial Content */ case 300: /* Multiple Choices */ case 302: /* Found */ case 305: /* Use Proxy */ case 306: /* (Unused) */ case 307: /* Temporary Redirect */ case 406: /* Not Acceptable */ case 416: /* Requested Range Not Satisfiable */ case 417: /* Expectation Failed */ case 422: /* Unprocessable Entity */ case 500: /* Internal Server Error */ case 502: /* Bad Gateway */ case 505: /* HTTP Version Not Supported */ new_errno = EIO; break; case 503: /* Service Unavailable */ new_errno = ERRNO_SERVICE_UNAVAILABLE; break; case 413: /* Request Entity too Large */ new_errno = EFBIG; break; default: new_errno = EIO; } errno = new_errno; } int http_result_code_from_session() { const char *p = ne_get_error( dav_session.ctx ); char *q; int err; set_error_message(p); /* remember the error message */ err = strtol(p, &q, 10); if (p == q) { err = ERRNO_ERROR_STRING; } return err; } void set_errno_from_session() { int err = http_result_code_from_session(); if( err == EIO || err == ERRNO_ERROR_STRING) { errno = err; } else { set_errno_from_http_errcode(err); } } void set_errno_from_neon_errcode( int neon_code ) { if( neon_code != NE_OK ) { DEBUG_WEBDAV("Neon error code was %d", neon_code); } switch(neon_code) { case NE_OK: /* Success, but still the possiblity of problems */ case NE_ERROR: /* Generic error; use ne_get_error(session) for message */ set_errno_from_session(); /* Something wrong with http communication */ break; case NE_LOOKUP: /* Server or proxy hostname lookup failed */ errno = ERRNO_LOOKUP_ERROR; break; case NE_AUTH: /* User authentication failed on server */ errno = ERRNO_USER_UNKNOWN_ON_SERVER; break; case NE_PROXYAUTH: /* User authentication failed on proxy */ errno = ERRNO_PROXY_AUTH; break; case NE_CONNECT: /* Could not connect to server */ errno = ERRNO_CONNECT; break; case NE_TIMEOUT: /* Connection timed out */ errno = ERRNO_TIMEOUT; break; case NE_FAILED: /* The precondition failed */ errno = ERRNO_PRECONDITION; break; case NE_RETRY: /* Retry request (ne_end_request ONLY) */ errno = ERRNO_RETRY; break; case NE_REDIRECT: /* See ne_redirect.h */ errno = ERRNO_REDIRECT; break; default: errno = ERRNO_GENERAL_ERROR; } } /* cleanPath to return an escaped path of an uri */ char *_cleanPath( const char* uri ) { int rc = 0; char *path = NULL; char *re = NULL; rc = c_parse_uri( uri, NULL, NULL, NULL, NULL, NULL, &path ); if( rc < 0 ) { DEBUG_WEBDAV("Unable to cleanPath %s", uri ? uri: "" ); re = NULL; } else { re = ne_path_escape( path ); } SAFE_FREE( path ); return re; } #ifndef HAVE_TIMEGM #ifdef _WIN32 static int is_leap(unsigned y) { y += 1900; return (y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0); } static time_t timegm(struct tm *tm) { static const unsigned ndays[2][12] = { {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} }; time_t res = 0; int i; for (i = 70; i < tm->tm_year; ++i) res += is_leap(i) ? 366 : 365; for (i = 0; i < tm->tm_mon; ++i) res += ndays[is_leap(tm->tm_year)][i]; res += tm->tm_mday - 1; res *= 24; res += tm->tm_hour; res *= 60; res += tm->tm_min; res *= 60; res += tm->tm_sec; return res; } #else /* A hopefully portable version of timegm */ static time_t timegm(struct tm *tm ) { time_t ret; char *tz; tz = getenv("TZ"); setenv("TZ", "", 1); tzset(); ret = mktime(tm); if (tz) setenv("TZ", tz, 1); else unsetenv("TZ"); tzset(); return ret; } #endif /* Platform switch */ #endif /* HAVE_TIMEGM */ #define RFC1123_FORMAT "%3s, %02d %3s %4d %02d:%02d:%02d GMT" static const char short_months[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; /* * This function is borrowed from libneon's ne_httpdate_parse. * Unfortunately that one converts to local time but here UTC is * needed. * This one uses timegm instead, which returns UTC. */ time_t oc_httpdate_parse( const char *date ) { struct tm gmt; char wkday[4], mon[4]; int n; time_t result = 0; memset(&gmt, 0, sizeof(struct tm)); /* it goes: Sun, 06 Nov 1994 08:49:37 GMT */ n = sscanf(date, RFC1123_FORMAT, wkday, &gmt.tm_mday, mon, &gmt.tm_year, &gmt.tm_hour, &gmt.tm_min, &gmt.tm_sec); /* Is it portable to check n==7 here? */ gmt.tm_year -= 1900; for (n=0; n<12; n++) if (strcmp(mon, short_months[n]) == 0) break; /* tm_mon comes out as 12 if the month is corrupt, which is desired, * since the mktime will then fail */ gmt.tm_mon = n; gmt.tm_isdst = -1; result = timegm(&gmt); return result; } /* * helper: convert a resource struct to file_stat struct. */ csync_vio_file_stat_t *resourceToFileStat( struct resource *res ) { csync_vio_file_stat_t *lfs = NULL; if( ! res ) { return NULL; } lfs = c_malloc(sizeof(csync_vio_file_stat_t)); if (lfs == NULL) { errno = ENOMEM; return NULL; } lfs->name = c_strdup( res->name ); lfs->fields = CSYNC_VIO_FILE_STAT_FIELDS_NONE; if( res->type == resr_normal ) { lfs->fields |= CSYNC_VIO_FILE_STAT_FIELDS_TYPE; lfs->type = CSYNC_VIO_FILE_TYPE_REGULAR; } else if( res->type == resr_collection ) { lfs->fields |= CSYNC_VIO_FILE_STAT_FIELDS_TYPE; lfs->type = CSYNC_VIO_FILE_TYPE_DIRECTORY; } else { DEBUG_WEBDAV("ERROR: Unknown resource type %d", res->type); } lfs->mtime = res->modtime; lfs->fields |= CSYNC_VIO_FILE_STAT_FIELDS_MTIME; lfs->size = res->size; lfs->fields |= CSYNC_VIO_FILE_STAT_FIELDS_SIZE; if( res->md5 ) { lfs->md5 = c_strdup(res->md5); } lfs->fields |= CSYNC_VIO_FILE_STAT_FIELDS_MD5; return lfs; } /* WebDAV does not deliver permissions. Set a default here. */ int _stat_perms( int type ) { int ret = 0; if( type == CSYNC_VIO_FILE_TYPE_DIRECTORY ) { /* DEBUG_WEBDAV("Setting mode in stat (dir)"); */ /* directory permissions */ ret = S_IFDIR | S_IRUSR | S_IWUSR | S_IXUSR /* directory, rwx for user */ | S_IRGRP | S_IXGRP /* rx for group */ | S_IROTH | S_IXOTH; /* rx for others */ } else { /* regualar file permissions */ /* DEBUG_WEBDAV("Setting mode in stat (file)"); */ ret = S_IFREG | S_IRUSR | S_IWUSR /* regular file, user read & write */ | S_IRGRP /* group read perm */ | S_IROTH; /* others read perm */ } return ret; }