Main Page | Modules | Data Structures | File List | Data Fields | Globals | Related Pages

rpmio/url.c

Go to the documentation of this file.
00001 
00005 #include "system.h"
00006 
00007 #include <netinet/in.h>
00008 
00009 #include <rpmmacro.h>
00010 #include <rpmmessages.h>
00011 #include <rpmio_internal.h>
00012 
00013 #include "debug.h"
00014 
00015 /*@access FD_t@*/               /* XXX compared with NULL */
00016 /*@access urlinfo@*/
00017 
00018 #ifndef IPPORT_FTP
00019 #define IPPORT_FTP      21
00020 #endif
00021 #ifndef IPPORT_HTTP
00022 #define IPPORT_HTTP     80
00023 #endif
00024 
00027 /*@unchecked@*/
00028 int _url_iobuf_size = RPMURL_IOBUF_SIZE;
00029 
00032 /*@unchecked@*/
00033 int _url_debug = 0;
00034 
00035 #define URLDBG(_f, _m, _x)      if ((_url_debug | (_f)) & (_m)) fprintf _x
00036 
00037 #define URLDBGIO(_f, _x)        URLDBG((_f), RPMURL_DEBUG_IO, _x)
00038 #define URLDBGREFS(_f, _x)      URLDBG((_f), RPMURL_DEBUG_REFS, _x)
00039 
00042 /*@unchecked@*/
00043 /*@only@*/ /*@null@*/
00044 urlinfo *_url_cache = NULL;
00045 
00048 /*@unchecked@*/
00049 int _url_count = 0;
00050 
00056 /*@unused@*/ static inline /*@null@*/ void *
00057 _free(/*@only@*/ /*@null@*/ const void * p) /*@modifies p@*/
00058 {
00059     if (p != NULL)      free((void *)p);
00060     return NULL;
00061 }
00062 
00063 urlinfo XurlLink(urlinfo u, const char *msg, const char *file, unsigned line)
00064 {
00065     URLSANE(u);
00066     u->nrefs++;
00067 /*@-modfilesys@*/
00068 URLDBGREFS(0, (stderr, "--> url %p ++ %d %s at %s:%u\n", u, u->nrefs, msg, file, line));
00069 /*@=modfilesys@*/
00070     /*@-refcounttrans@*/ return u; /*@=refcounttrans@*/
00071 }
00072 
00073 urlinfo XurlNew(const char *msg, const char *file, unsigned line)
00074 {
00075     urlinfo u;
00076     if ((u = xmalloc(sizeof(*u))) == NULL)
00077         return NULL;
00078     memset(u, 0, sizeof(*u));
00079     u->proxyp = -1;
00080     u->port = -1;
00081     u->urltype = URL_IS_UNKNOWN;
00082     u->ctrl = NULL;
00083     u->data = NULL;
00084     u->bufAlloced = 0;
00085     u->buf = NULL;
00086     u->httpHasRange = 1;
00087     u->httpVersion = 0;
00088     u->nrefs = 0;
00089     u->magic = URLMAGIC;
00090     return XurlLink(u, msg, file, line);
00091 }
00092 
00093 urlinfo XurlFree(urlinfo u, const char *msg, const char *file, unsigned line)
00094 {
00095     int xx;
00096 
00097     URLSANE(u);
00098 URLDBGREFS(0, (stderr, "--> url %p -- %d %s at %s:%u\n", u, u->nrefs, msg, file, line));
00099     if (--u->nrefs > 0)
00100         /*@-refcounttrans -retalias@*/ return u; /*@=refcounttrans =retalias@*/
00101     if (u->ctrl) {
00102 #ifndef NOTYET
00103         void * fp = fdGetFp(u->ctrl);
00104         /*@-branchstate@*/
00105         if (fp) {
00106             fdPush(u->ctrl, fpio, fp, -1);   /* Push fpio onto stack */
00107             (void) Fclose(u->ctrl);
00108         } else if (fdio->_fileno(u->ctrl) >= 0)
00109             xx = fdio->close(u->ctrl);
00110         /*@=branchstate@*/
00111 #else
00112         (void) Fclose(u->ctrl);
00113 #endif
00114 
00115         u->ctrl = fdio->_fdderef(u->ctrl, "persist ctrl (urlFree)", file, line);
00116         /*@-usereleased@*/
00117         if (u->ctrl)
00118             fprintf(stderr, _("warning: u %p ctrl %p nrefs != 0 (%s %s)\n"),
00119                         u, u->ctrl, (u->host ? u->host : ""),
00120                         (u->service ? u->service : ""));
00121         /*@=usereleased@*/
00122     }
00123     if (u->data) {
00124 #ifndef NOTYET
00125         void * fp = fdGetFp(u->data);
00126         if (fp) {
00127             fdPush(u->data, fpio, fp, -1);   /* Push fpio onto stack */
00128             (void) Fclose(u->data);
00129         } else if (fdio->_fileno(u->data) >= 0)
00130             xx = fdio->close(u->data);
00131 #else
00132         (void) Fclose(u->ctrl);
00133 #endif
00134 
00135         u->data = fdio->_fdderef(u->data, "persist data (urlFree)", file, line);
00136         /*@-usereleased@*/
00137         if (u->data)
00138             fprintf(stderr, _("warning: u %p data %p nrefs != 0 (%s %s)\n"),
00139                         u, u->data, (u->host ? u->host : ""),
00140                         (u->service ? u->service : ""));
00141         /*@=usereleased@*/
00142     }
00143     u->buf = _free(u->buf);
00144     u->url = _free(u->url);
00145     u->service = _free((void *)u->service);
00146     u->user = _free((void *)u->user);
00147     u->password = _free((void *)u->password);
00148     u->host = _free((void *)u->host);
00149     u->portstr = _free((void *)u->portstr);
00150     u->proxyu = _free((void *)u->proxyu);
00151     u->proxyh = _free((void *)u->proxyh);
00152 
00153     /*@-refcounttrans@*/ u = _free(u); /*@-refcounttrans@*/
00154     return NULL;
00155 }
00156 
00157 /*@-boundswrite@*/
00158 void urlFreeCache(void)
00159 {
00160     if (_url_cache) {
00161         int i;
00162         for (i = 0; i < _url_count; i++) {
00163             if (_url_cache[i] == NULL) continue;
00164             _url_cache[i] = urlFree(_url_cache[i], "_url_cache");
00165             if (_url_cache[i])
00166                 fprintf(stderr,
00167                         _("warning: _url_cache[%d] %p nrefs(%d) != 1 (%s %s)\n"),
00168                         i, _url_cache[i], _url_cache[i]->nrefs,
00169                         (_url_cache[i]->host ? _url_cache[i]->host : ""),
00170                         (_url_cache[i]->service ? _url_cache[i]->service : ""));
00171         }
00172     }
00173     _url_cache = _free(_url_cache);
00174     _url_count = 0;
00175 }
00176 /*@=boundswrite@*/
00177 
00178 static int urlStrcmp(/*@null@*/ const char * str1, /*@null@*/ const char * str2)
00179         /*@*/
00180 {
00181     if (str1)
00182         if (str2)
00183             return strcmp(str1, str2);
00184     if (str1 != str2)
00185         return -1;
00186     return 0;
00187 }
00188 
00189 /*@-boundswrite@*/
00190 /*@-mods@*/
00191 static void urlFind(/*@null@*/ /*@in@*/ /*@out@*/ urlinfo * uret, int mustAsk)
00192         /*@globals rpmGlobalMacroContext, h_errno, fileSystem, internalState @*/
00193         /*@modifies *uret, rpmGlobalMacroContext, fileSystem, internalState @*/
00194 {
00195     urlinfo u;
00196     int ucx;
00197     int i = 0;
00198 
00199     if (uret == NULL)
00200         return;
00201 
00202     u = *uret;
00203     URLSANE(u);
00204 
00205     ucx = -1;
00206     for (i = 0; i < _url_count; i++) {
00207         urlinfo ou = NULL;
00208         if (_url_cache == NULL || (ou = _url_cache[i]) == NULL) {
00209             if (ucx < 0)
00210                 ucx = i;
00211             continue;
00212         }
00213 
00214         /* Check for cache-miss condition. A cache miss is
00215          *    a) both items are not NULL and don't compare.
00216          *    b) either of the items is not NULL.
00217          */
00218         if (urlStrcmp(u->service, ou->service))
00219             continue;
00220         if (urlStrcmp(u->host, ou->host))
00221             continue;
00222         if (urlStrcmp(u->user, ou->user))
00223             continue;
00224         if (urlStrcmp(u->portstr, ou->portstr))
00225             continue;
00226         break;  /* Found item in cache */
00227     }
00228 
00229     if (i == _url_count) {
00230         if (ucx < 0) {
00231             ucx = _url_count++;
00232             _url_cache = xrealloc(_url_cache, sizeof(*_url_cache) * _url_count);
00233         }
00234         if (_url_cache)         /* XXX always true */
00235             _url_cache[ucx] = urlLink(u, "_url_cache (miss)");
00236         u = urlFree(u, "urlSplit (urlFind miss)");
00237     } else {
00238         ucx = i;
00239         u = urlFree(u, "urlSplit (urlFind hit)");
00240     }
00241 
00242     /* This URL is now cached. */
00243 
00244     if (_url_cache)             /* XXX always true */
00245         u = urlLink(_url_cache[ucx], "_url_cache");
00246     *uret = u;
00247     /*@-usereleased@*/
00248     u = urlFree(u, "_url_cache (urlFind)");
00249     /*@=usereleased@*/
00250 
00251     /* Zap proxy host and port in case they have been reset */
00252     u->proxyp = -1;
00253     u->proxyh = _free(u->proxyh);
00254 
00255     /* Perform one-time FTP initialization */
00256     if (u->urltype == URL_IS_FTP) {
00257 
00258         if (mustAsk || (u->user != NULL && u->password == NULL)) {
00259             const char * host = (u->host ? u->host : "");
00260             const char * user = (u->user ? u->user : "");
00261             char * prompt;
00262             prompt = alloca(strlen(host) + strlen(user) + 256);
00263             sprintf(prompt, _("Password for %s@%s: "), user, host);
00264             u->password = _free(u->password);
00265 /*@-dependenttrans -moduncon @*/
00266             u->password = /*@-unrecog@*/ getpass(prompt) /*@=unrecog@*/;
00267 /*@=dependenttrans =moduncon @*/
00268             if (u->password)
00269                 u->password = xstrdup(u->password);
00270         }
00271 
00272         if (u->proxyh == NULL) {
00273             const char *proxy = rpmExpand("%{_ftpproxy}", NULL);
00274             if (proxy && *proxy != '%') {
00275                 /*@observer@*/ const char * host = (u->host ? u->host : "");
00276                 const char *uu = (u->user ? u->user : "anonymous");
00277                 char *nu = xmalloc(strlen(uu) + sizeof("@") + strlen(host));
                (void) stpcpy( stpcpy( stpcpy(nu, uu), "@"), host);
                u->proxyu = nu;
                u->proxyh = xstrdup(proxy);
            }
            proxy = _free(proxy);
        }

        if (u->proxyp < 0) {
            const char *proxy = rpmExpand("%{_ftpport}", NULL);
00278             if (proxy && *proxy != '%') {
00279                 char *end;
00280                 int port = strtol(proxy, &end, 0);
00281                 if (!(end && *end == '\0')) {
00282                     fprintf(stderr, _("error: %sport must be a number\n"),
00283                         (u->service ? u->service : ""));
00284                     return;
00285                 }
00286                 u->proxyp = port;
00287             }
00288             proxy = _free(proxy);
00289         }
00290     }
00291 
00292     /* Perform one-time HTTP initialization */
00293     if (u->urltype == URL_IS_HTTP) {
00294 
00295         if (u->proxyh == NULL) {
00296             const char *proxy = rpmExpand("%{_httpproxy}", NULL);
00297             if (proxy && *proxy != '%')
00298                 u->proxyh = xstrdup(proxy);
00299             proxy = _free(proxy);
00300         }
00301 
00302         if (u->proxyp < 0) {
00303             const char *proxy = rpmExpand("%{_httpport}", NULL);
00304             if (proxy && *proxy != '%') {
00305                 char *end;
00306                 int port = strtol(proxy, &end, 0);
00307                 if (!(end && *end == '\0')) {
00308                     fprintf(stderr, _("error: %sport must be a number\n"),
00309                         (u->service ? u->service : ""));
00310                     return;
00311                 }
00312                 u->proxyp = port;
00313             }
00314             proxy = _free(proxy);
00315         }
00316 
00317     }
00318 
00319     return;
00320 }
00321 /*@=mods@*/
00322 /*@=boundswrite@*/
00323 
00326 /*@observer@*/ /*@unchecked@*/
00327 static struct urlstring {
00328 /*@observer@*/ /*@null@*/
00329     const char * leadin;
00330     urltype     ret;
00331 } urlstrings[] = {
00332     { "file://",        URL_IS_PATH },
00333     { "ftp://",         URL_IS_FTP },
00334     { "http://",        URL_IS_HTTP },
00335     { "-",              URL_IS_DASH },
00336     { NULL,             URL_IS_UNKNOWN }
00337 };
00338 
00339 urltype urlIsURL(const char * url)
00340 {
00341     struct urlstring *us;
00342 
00343 /*@-boundsread@*/
00344     if (url && *url) {
00345         for (us = urlstrings; us->leadin != NULL; us++) {
00346             if (strncmp(url, us->leadin, strlen(us->leadin)))
00347                 continue;
00348             return us->ret;
00349         }
00350     }
00351 /*@=boundsread@*/
00352 
00353     return URL_IS_UNKNOWN;
00354 }
00355 
00356 /*@-boundswrite@*/
00357 /* Return path portion of url (or pointer to NUL if url == NULL) */
00358 urltype urlPath(const char * url, const char ** pathp)
00359 {
00360     const char *path;
00361     int urltype;
00362 
00363     path = url;
00364     urltype = urlIsURL(url);
00365     /*@-branchstate@*/
00366     switch (urltype) {
00367     case URL_IS_FTP:
00368         url += sizeof("ftp://") - 1;
00369         path = strchr(url, '/');
00370         if (path == NULL) path = url + strlen(url);
00371         break;
00372     case URL_IS_HTTP:
00373     case URL_IS_PATH:
00374         url += sizeof("file://") - 1;
00375         path = strchr(url, '/');
00376         if (path == NULL) path = url + strlen(url);
00377         break;
00378     case URL_IS_UNKNOWN:
00379         if (path == NULL) path = "";
00380         break;
00381     case URL_IS_DASH:
00382         path = "";
00383         break;
00384     }
00385     /*@=branchstate@*/
00386     if (pathp)
00387         /*@-observertrans@*/
00388         *pathp = path;
00389         /*@=observertrans@*/
00390     return urltype;
00391 }
00392 /*@=boundswrite@*/
00393 
00394 /*
00395  * Split URL into components. The URL can look like
00396  *      service://user:password@host:port/path
00397  */
00398 /*@-bounds@*/
00399 /*@-modfilesys@*/
00400 int urlSplit(const char * url, urlinfo *uret)
00401 {
00402     urlinfo u;
00403     char *myurl;
00404     char *s, *se, *f, *fe;
00405 
00406     if (uret == NULL)
00407         return -1;
00408     if ((u = urlNew("urlSplit")) == NULL)
00409         return -1;
00410 
00411     if ((se = s = myurl = xstrdup(url)) == NULL) {
00412         u = urlFree(u, "urlSplit (error #1)");
00413         return -1;
00414     }
00415 
00416     u->url = xstrdup(url);
00417     u->urltype = urlIsURL(url);
00418 
00419     while (1) {
00420         /* Point to end of next item */
00421         while (*se && *se != '/') se++;
00422         /* Item was service. Save service and go for the rest ...*/
00423         if (*se && (se != s) && se[-1] == ':' && se[0] == '/' && se[1] == '/') {
00424                 se[-1] = '\0';
00425             u->service = xstrdup(s);
00426             se += 2;    /* skip over "//" */
00427             s = se++;
00428             continue;
00429         }
00430         
00431         /* Item was everything-but-path. Continue parse on rest */
00432         *se = '\0';
00433         break;
00434     }
00435 
00436     /* Look for ...@host... */
00437     fe = f = s;
00438     while (*fe && *fe != '@') fe++;
00439     /*@-branchstate@*/
00440     if (*fe == '@') {
00441         s = fe + 1;
00442         *fe = '\0';
00443         /* Look for user:password@host... */
00444         while (fe > f && *fe != ':') fe--;
00445         if (*fe == ':') {
00446             *fe++ = '\0';
00447             u->password = xstrdup(fe);
00448         }
00449         u->user = xstrdup(f);
00450     }
00451     /*@=branchstate@*/
00452 
00453     /* Look for ...host:port */
00454     fe = f = s;
00455     while (*fe && *fe != ':') fe++;
00456     if (*fe == ':') {
00457         *fe++ = '\0';
00458         u->portstr = xstrdup(fe);
00459         if (u->portstr != NULL && u->portstr[0] != '\0') {
00460             char *end;
00461             u->port = strtol(u->portstr, &end, 0);
00462             if (!(end && *end == '\0')) {
00463                 rpmMessage(RPMMESS_ERROR, _("url port must be a number\n"));
00464                 myurl = _free(myurl);
00465                 u = urlFree(u, "urlSplit (error #3)");
00466                 return -1;
00467             }
00468         }
00469     }
00470     u->host = xstrdup(f);
00471 
00472     if (u->port < 0 && u->service != NULL) {
00473         struct servent *serv;
00474         /*@-multithreaded -moduncon @*/
00475         serv = getservbyname(u->service, "tcp");
00476         /*@=multithreaded =moduncon @*/
00477         if (serv != NULL)
00478             u->port = ntohs(serv->s_port);
00479         else if (u->urltype == URL_IS_FTP)
00480             u->port = IPPORT_FTP;
00481         else if (u->urltype == URL_IS_HTTP)
00482             u->port = IPPORT_HTTP;
00483     }
00484 
00485     myurl = _free(myurl);
00486     if (uret) {
00487         *uret = u;
00488 /*@-globs -mods @*/ /* FIX: rpmGlobalMacroContext not in <rpmlib.h> */
00489         urlFind(uret, 0);
00490 /*@=globs =mods @*/
00491     }
00492     return 0;
00493 }
00494 /*@=modfilesys@*/
00495 /*@=bounds@*/
00496 
00497 int urlGetFile(const char * url, const char * dest)
00498 {
00499     int rc;
00500     FD_t sfd = NULL;
00501     FD_t tfd = NULL;
00502     const char * sfuPath = NULL;
00503     int urlType = urlPath(url, &sfuPath);
00504 
00505     if (*sfuPath == '\0')
00506         return FTPERR_UNKNOWN;
00507         
00508     sfd = Fopen(url, "r.ufdio");
00509     if (sfd == NULL || Ferror(sfd)) {
00510         rpmMessage(RPMMESS_DEBUG, _("failed to open %s: %s\n"), url, Fstrerror(sfd));
00511         rc = FTPERR_UNKNOWN;
00512         goto exit;
00513     }
00514 
00515     if (dest == NULL) {
00516         if ((dest = strrchr(sfuPath, '/')) != NULL)
00517             dest++;
00518         else
00519             dest = sfuPath;
00520     }
00521 
00522     if (dest == NULL)
00523         return FTPERR_UNKNOWN;
00524 
00525     tfd = Fopen(dest, "w.ufdio");
00526 if (_url_debug)
00527 fprintf(stderr, "*** urlGetFile sfd %p %s tfd %p %s\n", sfd, url, (tfd ? tfd : NULL), dest);
00528     if (tfd == NULL || Ferror(tfd)) {
00529         /* XXX Fstrerror */
00530         rpmMessage(RPMMESS_DEBUG, _("failed to create %s: %s\n"), dest, Fstrerror(tfd));
00531         rc = FTPERR_UNKNOWN;
00532         goto exit;
00533     }
00534 
00535     switch (urlType) {
00536     case URL_IS_FTP:
00537     case URL_IS_HTTP:
00538     case URL_IS_PATH:
00539     case URL_IS_DASH:
00540     case URL_IS_UNKNOWN:
00541         if ((rc = ufdGetFile(sfd, tfd))) {
00542             (void) Unlink(dest);
00543             /* XXX FIXME: sfd possibly closed by copyData */
00544             /*@-usereleased@*/ (void) Fclose(sfd) /*@=usereleased@*/ ;
00545         }
00546         sfd = NULL;     /* XXX Fclose(sfd) done by ufdGetFile */
00547         break;
00548     default:
00549         rc = FTPERR_UNKNOWN;
00550         break;
00551     }
00552 
00553 exit:
00554     if (tfd)
00555         (void) Fclose(tfd);
00556     if (sfd)
00557         (void) Fclose(sfd);
00558 
00559     return rc;
00560 }
00561 

Generated on Fri Aug 5 10:14:06 2005 for rpm by doxygen 1.3.5