diff options
Diffstat (limited to 'bundle/libxml/nanohttp.c')
| -rw-r--r-- | bundle/libxml/nanohttp.c | 1528 |
1 files changed, 0 insertions, 1528 deletions
diff --git a/bundle/libxml/nanohttp.c b/bundle/libxml/nanohttp.c deleted file mode 100644 index 5a126b8868..0000000000 --- a/bundle/libxml/nanohttp.c +++ /dev/null @@ -1,1528 +0,0 @@ -/* - * nanohttp.c: minimalist HTTP GET implementation to fetch external subsets. - * focuses on size, streamability, reentrancy and portability - * - * This is clearly not a general purpose HTTP implementation - * If you look for one, check: - * http://www.w3.org/Library/ - * - * See Copyright for the status of this software. - * - * daniel@veillard.com - */ - -/* TODO add compression support, Send the Accept- , and decompress on the - fly with ZLIB if found at compile-time */ - -#define NEED_SOCKETS -#define IN_LIBXML -#include "libxml.h" -/* Hack to get compilation to work -SH */ -#include <errno.h> - -#ifdef LIBXML_HTTP_ENABLED -#include <string.h> - -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif -#ifdef HAVE_SYS_SOCKET_H -#include <sys/socket.h> -#endif -#ifdef HAVE_NETINET_IN_H -#include <netinet/in.h> -#endif -#ifdef HAVE_ARPA_INET_H -#include <arpa/inet.h> -#endif -#ifdef HAVE_NETDB_H -#include <netdb.h> -#endif -#ifdef HAVE_RESOLV_H -#ifdef HAVE_ARPA_NAMESER_H -#include <arpa/nameser.h> -#endif -#include <resolv.h> -#endif -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#ifdef HAVE_SYS_TIME_H -#include <sys/time.h> -#endif -#ifdef HAVE_SYS_SELECT_H -#include <sys/select.h> -#endif -#ifdef HAVE_STRINGS_H -#include <strings.h> -#endif -#ifdef SUPPORT_IP6 -#include <resolv.h> -#endif - -#ifdef VMS -#include <stropts> -#define SOCKLEN_T unsigned int -#define SOCKET int -#endif - -#include <libxml/globals.h> -#include <libxml/xmlerror.h> -#include <libxml/xmlmemory.h> -#include <libxml/parser.h> /* for xmlStr(n)casecmp() */ -#include <libxml/nanohttp.h> -#include <libxml/globals.h> -#include <libxml/uri.h> - -/** - * A couple portability macros - */ -#ifndef _WINSOCKAPI_ -#define closesocket(s) close(s) -#define SOCKET int -#endif - -#ifndef SOCKLEN_T -#define SOCKLEN_T unsigned int -#endif -#ifndef SOCKET -#define SOCKET int -#endif - -#ifdef STANDALONE -#define DEBUG_HTTP -#define xmlStrncasecmp(a, b, n) strncasecmp((char *)a, (char *)b, n) -#define xmlStrcasecmpi(a, b) strcasecmp((char *)a, (char *)b) -#endif - -#define XML_NANO_HTTP_MAX_REDIR 10 - -#define XML_NANO_HTTP_CHUNK 4096 - -#define XML_NANO_HTTP_CLOSED 0 -#define XML_NANO_HTTP_WRITE 1 -#define XML_NANO_HTTP_READ 2 -#define XML_NANO_HTTP_NONE 4 - -typedef struct xmlNanoHTTPCtxt { - char *protocol; /* the protocol name */ - char *hostname; /* the host name */ - int port; /* the port */ - char *path; /* the path within the URL */ - SOCKET fd; /* the file descriptor for the socket */ - int state; /* WRITE / READ / CLOSED */ - char *out; /* buffer sent (zero terminated) */ - char *outptr; /* index within the buffer sent */ - char *in; /* the receiving buffer */ - char *content; /* the start of the content */ - char *inptr; /* the next byte to read from network */ - char *inrptr; /* the next byte to give back to the client */ - int inlen; /* len of the input buffer */ - int last; /* return code for last operation */ - int returnValue; /* the protocol return value */ - int ContentLength; /* specified content length from HTTP header */ - char *contentType; /* the MIME type for the input */ - char *location; /* the new URL in case of redirect */ - char *authHeader; /* contents of {WWW,Proxy}-Authenticate header */ -} xmlNanoHTTPCtxt, *xmlNanoHTTPCtxtPtr; - -static int initialized = 0; -static char *proxy = NULL; /* the proxy name if any */ -static int proxyPort; /* the proxy port if any */ -static unsigned int timeout = 60;/* the select() timeout in seconds */ - -int xmlNanoHTTPFetchContent( void * ctx, char ** ptr, int * len ); -int xmlNanoHTTPContentLength( void * ctx ); - -/** - * A portability function - */ -static int socket_errno(void) { -#ifdef _WINSOCKAPI_ - return(WSAGetLastError()); -#else - return(errno); -#endif -} - -/** - * xmlNanoHTTPInit: - * - * Initialize the HTTP protocol layer. - * Currently it just checks for proxy informations - */ - -void -xmlNanoHTTPInit(void) { - const char *env; -#ifdef _WINSOCKAPI_ - WSADATA wsaData; -#endif - - if (initialized) - return; - -#ifdef _WINSOCKAPI_ - if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) - return; -#endif - - if (proxy == NULL) { - proxyPort = 80; - env = getenv("no_proxy"); - if (env != NULL) - goto done; - env = getenv("http_proxy"); - if (env != NULL) { - xmlNanoHTTPScanProxy(env); - goto done; - } - env = getenv("HTTP_PROXY"); - if (env != NULL) { - xmlNanoHTTPScanProxy(env); - goto done; - } - } -done: - initialized = 1; -} - -/** - * xmlNanoHTTPCleanup: - * - * Cleanup the HTTP protocol layer. - */ - -void -xmlNanoHTTPCleanup(void) { - if (proxy != NULL) - xmlFree(proxy); -#ifdef _WINSOCKAPI_ - if (initialized) - WSACleanup(); -#endif - initialized = 0; - return; -} - -/** - * xmlNanoHTTPScanURL: - * @ctxt: an HTTP context - * @URL: The URL used to initialize the context - * - * (Re)Initialize an HTTP context by parsing the URL and finding - * the protocol host port and path it indicates. - */ - -static void -xmlNanoHTTPScanURL(xmlNanoHTTPCtxtPtr ctxt, const char *URL) { - const char *cur = URL; - char buf[4096]; - int indx = 0; - int port = 0; - - if (ctxt->protocol != NULL) { - xmlFree(ctxt->protocol); - ctxt->protocol = NULL; - } - if (ctxt->hostname != NULL) { - xmlFree(ctxt->hostname); - ctxt->hostname = NULL; - } - if (ctxt->path != NULL) { - xmlFree(ctxt->path); - ctxt->path = NULL; - } - if (URL == NULL) return; - buf[indx] = 0; - while (*cur != 0) { - if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) { - buf[indx] = 0; - ctxt->protocol = xmlMemStrdup(buf); - indx = 0; - cur += 3; - break; - } - buf[indx++] = *cur++; - } - if (*cur == 0) return; - - buf[indx] = 0; - while (1) { - if (cur[0] == ':') { - buf[indx] = 0; - ctxt->hostname = xmlMemStrdup(buf); - indx = 0; - cur += 1; - while ((*cur >= '0') && (*cur <= '9')) { - port *= 10; - port += *cur - '0'; - cur++; - } - if (port != 0) ctxt->port = port; - while ((cur[0] != '/') && (*cur != 0)) - cur++; - break; - } - if ((*cur == '/') || (*cur == 0)) { - buf[indx] = 0; - ctxt->hostname = xmlMemStrdup(buf); - indx = 0; - break; - } - buf[indx++] = *cur++; - } - if (*cur == 0) - ctxt->path = xmlMemStrdup("/"); - else { - indx = 0; - buf[indx] = 0; - while (*cur != 0) - buf[indx++] = *cur++; - buf[indx] = 0; - ctxt->path = xmlMemStrdup(buf); - } -} - -/** - * xmlNanoHTTPScanProxy: - * @URL: The proxy URL used to initialize the proxy context - * - * (Re)Initialize the HTTP Proxy context by parsing the URL and finding - * the protocol host port it indicates. - * Should be like http://myproxy/ or http://myproxy:3128/ - * A NULL URL cleans up proxy informations. - */ - -void -xmlNanoHTTPScanProxy(const char *URL) { - const char *cur = URL; - char buf[4096]; - int indx = 0; - int port = 0; - - if (proxy != NULL) { - xmlFree(proxy); - proxy = NULL; - } - if (proxyPort != 0) { - proxyPort = 0; - } -#ifdef DEBUG_HTTP - if (URL == NULL) - xmlGenericError(xmlGenericErrorContext, - "Removing HTTP proxy info\n"); - else - xmlGenericError(xmlGenericErrorContext, - "Using HTTP proxy %s\n", URL); -#endif - if (URL == NULL) return; - buf[indx] = 0; - while (*cur != 0) { - if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) { - buf[indx] = 0; - indx = 0; - cur += 3; - break; - } - buf[indx++] = *cur++; - } - if (*cur == 0) return; - - buf[indx] = 0; - while (1) { - if (cur[0] == ':') { - buf[indx] = 0; - proxy = xmlMemStrdup(buf); - indx = 0; - cur += 1; - while ((*cur >= '0') && (*cur <= '9')) { - port *= 10; - port += *cur - '0'; - cur++; - } - if (port != 0) proxyPort = port; - while ((cur[0] != '/') && (*cur != 0)) - cur++; - break; - } - if ((*cur == '/') || (*cur == 0)) { - buf[indx] = 0; - proxy = xmlMemStrdup(buf); - indx = 0; - break; - } - buf[indx++] = *cur++; - } -} - -/** - * xmlNanoHTTPNewCtxt: - * @URL: The URL used to initialize the context - * - * Allocate and initialize a new HTTP context. - * - * Returns an HTTP context or NULL in case of error. - */ - -static xmlNanoHTTPCtxtPtr -xmlNanoHTTPNewCtxt(const char *URL) { - xmlNanoHTTPCtxtPtr ret; - xmlChar *escaped; - - ret = (xmlNanoHTTPCtxtPtr) xmlMalloc(sizeof(xmlNanoHTTPCtxt)); - if (ret == NULL) return(NULL); - - memset(ret, 0, sizeof(xmlNanoHTTPCtxt)); - ret->port = 80; - ret->returnValue = 0; - ret->fd = -1; - ret->ContentLength = -1; - - escaped = xmlURIEscapeStr(BAD_CAST URL, BAD_CAST"@/:=?;#%&"); - if (escaped != NULL) { - xmlNanoHTTPScanURL(ret, (const char *) escaped); - xmlFree(escaped); - } else { - xmlNanoHTTPScanURL(ret, URL); - } - - return(ret); -} - -/** - * xmlNanoHTTPFreeCtxt: - * @ctxt: an HTTP context - * - * Frees the context after closing the connection. - */ - -static void -xmlNanoHTTPFreeCtxt(xmlNanoHTTPCtxtPtr ctxt) { - if (ctxt == NULL) return; - if (ctxt->hostname != NULL) xmlFree(ctxt->hostname); - if (ctxt->protocol != NULL) xmlFree(ctxt->protocol); - if (ctxt->path != NULL) xmlFree(ctxt->path); - if (ctxt->out != NULL) xmlFree(ctxt->out); - if (ctxt->in != NULL) xmlFree(ctxt->in); - if (ctxt->contentType != NULL) xmlFree(ctxt->contentType); - if (ctxt->location != NULL) xmlFree(ctxt->location); - if (ctxt->authHeader != NULL) xmlFree(ctxt->authHeader); - ctxt->state = XML_NANO_HTTP_NONE; - if (ctxt->fd >= 0) closesocket(ctxt->fd); - ctxt->fd = -1; - xmlFree(ctxt); -} - -/** - * xmlNanoHTTPSend: - * @ctxt: an HTTP context - * - * Send the input needed to initiate the processing on the server side - * Returns number of bytes sent or -1 on error. - */ - -static int -xmlNanoHTTPSend(xmlNanoHTTPCtxtPtr ctxt, const char * xmt_ptr, int outlen) { - - int total_sent = 0; - - if ( (ctxt->state & XML_NANO_HTTP_WRITE) && (xmt_ptr != NULL ) ) { - while (total_sent < outlen) { - int nsent = send(ctxt->fd, xmt_ptr + total_sent, - outlen - total_sent, 0); - if (nsent>0) - total_sent += nsent; - else if ( ( nsent == -1 ) && -#if defined(EAGAIN) && EAGAIN != EWOULDBLOCK - ( socket_errno( ) != EAGAIN ) && -#endif - ( socket_errno( ) != EWOULDBLOCK ) ) { - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPSend error: %s", - strerror( socket_errno( ) ) ); - - if ( total_sent == 0 ) - total_sent = -1; - break; - } - else { - /* - ** No data sent - ** Since non-blocking sockets are used, wait for - ** socket to be writable or default timeout prior - ** to retrying. - */ - - struct timeval tv; - fd_set wfd; - - tv.tv_sec = timeout; - tv.tv_usec = 0; - FD_ZERO( &wfd ); - FD_SET( ctxt->fd, &wfd ); - (void)select( ctxt->fd + 1, NULL, &wfd, NULL, &tv ); - } - } - } - - return total_sent; -} - -/** - * xmlNanoHTTPRecv: - * @ctxt: an HTTP context - * - * Read information coming from the HTTP connection. - * This is a blocking call (but it blocks in select(), not read()). - * - * Returns the number of byte read or -1 in case of error. - */ - -static int -xmlNanoHTTPRecv(xmlNanoHTTPCtxtPtr ctxt) { - fd_set rfd; - struct timeval tv; - - - while (ctxt->state & XML_NANO_HTTP_READ) { - if (ctxt->in == NULL) { - ctxt->in = (char *) xmlMalloc(65000 * sizeof(char)); - if (ctxt->in == NULL) { - ctxt->last = -1; - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPRecv: Error allocating input memory." ); - return(-1); - } - ctxt->inlen = 65000; - ctxt->inptr = ctxt->content = ctxt->inrptr = ctxt->in; - } - if (ctxt->inrptr > ctxt->in + XML_NANO_HTTP_CHUNK) { - int delta = ctxt->inrptr - ctxt->in; - int len = ctxt->inptr - ctxt->inrptr; - - memmove(ctxt->in, ctxt->inrptr, len); - ctxt->inrptr -= delta; - ctxt->content -= delta; - ctxt->inptr -= delta; - } - if ((ctxt->in + ctxt->inlen) < (ctxt->inptr + XML_NANO_HTTP_CHUNK)) { - int d_inptr = ctxt->inptr - ctxt->in; - int d_content = ctxt->content - ctxt->in; - int d_inrptr = ctxt->inrptr - ctxt->in; - char * tmp_ptr = ctxt->in; - - ctxt->inlen *= 2; - ctxt->in = (char *) xmlRealloc(tmp_ptr, ctxt->inlen); - if (ctxt->in == NULL) { - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPRecv: %s %d bytes.", - "Failed to realloc input buffer to", - ctxt->inlen ); - xmlFree( tmp_ptr ); - ctxt->last = -1; - return(-1); - } - ctxt->inptr = ctxt->in + d_inptr; - ctxt->content = ctxt->in + d_content; - ctxt->inrptr = ctxt->in + d_inrptr; - } - ctxt->last = recv(ctxt->fd, ctxt->inptr, XML_NANO_HTTP_CHUNK, 0); - if (ctxt->last > 0) { - ctxt->inptr += ctxt->last; - return(ctxt->last); - } - if (ctxt->last == 0) { - return(0); - } - if (ctxt->last == -1) { - switch (socket_errno()) { - case EINPROGRESS: - case EWOULDBLOCK: -#if defined(EAGAIN) && EAGAIN != EWOULDBLOCK - case EAGAIN: -#endif - break; - - case ECONNRESET: - case ESHUTDOWN: - return ( 0 ); - - default: - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPRecv: recv( ) failure - %s", - strerror( socket_errno( ) ) ); - return(-1); - } - } - - tv.tv_sec = timeout; - tv.tv_usec = 0; - FD_ZERO(&rfd); - FD_SET(ctxt->fd, &rfd); - - if ( (select(ctxt->fd+1, &rfd, NULL, NULL, &tv)<1) -#if defined(EINTR) - && (errno != EINTR) -#endif - ) - return(0); - } - return(0); -} - -/** - * xmlNanoHTTPReadLine: - * @ctxt: an HTTP context - * - * Read one line in the HTTP server output, usually for extracting - * the HTTP protocol informations from the answer header. - * - * Returns a newly allocated string with a copy of the line, or NULL - * which indicate the end of the input. - */ - -static char * -xmlNanoHTTPReadLine(xmlNanoHTTPCtxtPtr ctxt) { - char buf[4096]; - char *bp = buf; - int rc; - - while (bp - buf < 4095) { - if (ctxt->inrptr == ctxt->inptr) { - if ( (rc = xmlNanoHTTPRecv(ctxt)) == 0) { - if (bp == buf) - return(NULL); - else - *bp = 0; - return(xmlMemStrdup(buf)); - } - else if ( rc == -1 ) { - return ( NULL ); - } - } - *bp = *ctxt->inrptr++; - if (*bp == '\n') { - *bp = 0; - return(xmlMemStrdup(buf)); - } - if (*bp != '\r') - bp++; - } - buf[4095] = 0; - return(xmlMemStrdup(buf)); -} - - -/** - * xmlNanoHTTPScanAnswer: - * @ctxt: an HTTP context - * @line: an HTTP header line - * - * Try to extract useful informations from the server answer. - * We currently parse and process: - * - The HTTP revision/ return code - * - The Content-Type - * - The Location for redirect processing. - * - * Returns -1 in case of failure, the file descriptor number otherwise - */ - -static void -xmlNanoHTTPScanAnswer(xmlNanoHTTPCtxtPtr ctxt, const char *line) { - const char *cur = line; - - if (line == NULL) return; - - if (!strncmp(line, "HTTP/", 5)) { - int version = 0; - int ret = 0; - - cur += 5; - while ((*cur >= '0') && (*cur <= '9')) { - version *= 10; - version += *cur - '0'; - cur++; - } - if (*cur == '.') { - cur++; - if ((*cur >= '0') && (*cur <= '9')) { - version *= 10; - version += *cur - '0'; - cur++; - } - while ((*cur >= '0') && (*cur <= '9')) - cur++; - } else - version *= 10; - if ((*cur != ' ') && (*cur != '\t')) return; - while ((*cur == ' ') || (*cur == '\t')) cur++; - if ((*cur < '0') || (*cur > '9')) return; - while ((*cur >= '0') && (*cur <= '9')) { - ret *= 10; - ret += *cur - '0'; - cur++; - } - if ((*cur != 0) && (*cur != ' ') && (*cur != '\t')) return; - ctxt->returnValue = ret; - } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"Content-Type:", 13)) { - cur += 13; - while ((*cur == ' ') || (*cur == '\t')) cur++; - if (ctxt->contentType != NULL) - xmlFree(ctxt->contentType); - ctxt->contentType = xmlMemStrdup(cur); - } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"ContentType:", 12)) { - cur += 12; - if (ctxt->contentType != NULL) return; - while ((*cur == ' ') || (*cur == '\t')) cur++; - ctxt->contentType = xmlMemStrdup(cur); - } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"Location:", 9)) { - cur += 9; - while ((*cur == ' ') || (*cur == '\t')) cur++; - if (ctxt->location != NULL) - xmlFree(ctxt->location); - ctxt->location = xmlMemStrdup(cur); - } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"WWW-Authenticate:", 17)) { - cur += 17; - while ((*cur == ' ') || (*cur == '\t')) cur++; - if (ctxt->authHeader != NULL) - xmlFree(ctxt->authHeader); - ctxt->authHeader = xmlMemStrdup(cur); - } else if (!xmlStrncasecmp(BAD_CAST line, BAD_CAST"Proxy-Authenticate:", 19)) { - cur += 19; - while ((*cur == ' ') || (*cur == '\t')) cur++; - if (ctxt->authHeader != NULL) - xmlFree(ctxt->authHeader); - ctxt->authHeader = xmlMemStrdup(cur); - } else if ( !xmlStrncasecmp( BAD_CAST line, BAD_CAST"Content-Length:", 15) ) { - cur += 15; - ctxt->ContentLength = strtol( cur, NULL, 10 ); - } -} - -/** - * xmlNanoHTTPConnectAttempt: - * @addr: a socket address structure - * - * Attempt a connection to the given IP:port endpoint. It forces - * non-blocking semantic on the socket, and allow 60 seconds for - * the host to answer. - * - * Returns -1 in case of failure, the file descriptor number otherwise - */ - -static int -xmlNanoHTTPConnectAttempt(struct sockaddr *addr) -{ - SOCKET s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); - fd_set wfd; - struct timeval tv; - int status; - - if (s==-1) { -#ifdef DEBUG_HTTP - perror("socket"); -#endif - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s - %s", - "socket creation failure", - strerror( socket_errno( ) ) ); - return(-1); - } - -#ifdef _WINSOCKAPI_ - { - u_long one = 1; - - status = ioctlsocket(s, FIONBIO, &one) == SOCKET_ERROR ? -1 : 0; - } -#else /* _WINSOCKAPI_ */ -#if defined(VMS) - { - int enable = 1; - status = ioctl(s, FIONBIO, &enable); - } -#else /* VMS */ - if ((status = fcntl(s, F_GETFL, 0)) != -1) { -#ifdef O_NONBLOCK - status |= O_NONBLOCK; -#else /* O_NONBLOCK */ -#ifdef F_NDELAY - status |= F_NDELAY; -#endif /* F_NDELAY */ -#endif /* !O_NONBLOCK */ - status = fcntl(s, F_SETFL, status); - } - if (status < 0) { -#ifdef DEBUG_HTTP - perror("nonblocking"); -#endif - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s - %s", - "error setting non-blocking IO", - strerror( socket_errno( ) ) ); - closesocket(s); - return(-1); - } -#endif /* !VMS */ -#endif /* !_WINSOCKAPI_ */ - - if ((connect(s, addr, sizeof(*addr))==-1)) { - switch (socket_errno()) { - case EINPROGRESS: - case EWOULDBLOCK: - break; - default: - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s - %s", - "error connecting to HTTP server", - strerror( socket_errno( ) ) ); - closesocket(s); - return(-1); - } - } - - tv.tv_sec = timeout; - tv.tv_usec = 0; - - FD_ZERO(&wfd); - FD_SET(s, &wfd); - - switch(select(s+1, NULL, &wfd, NULL, &tv)) - { - case 0: - /* Time out */ - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s", - "Connect attempt timed out." ); - closesocket(s); - return(-1); - case -1: - /* Ermm.. ?? */ - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s - %s", - "Error connecting to host", - strerror( socket_errno( ) ) ); - closesocket(s); - return(-1); - } - - if ( FD_ISSET(s, &wfd) ) { - SOCKLEN_T len; - len = sizeof(status); - if (getsockopt(s, SOL_SOCKET, SO_ERROR, (char*)&status, &len) < 0 ) { - /* Solaris error code */ - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s - %s", - "Error retrieving pending socket errors", - strerror( socket_errno( ) ) ); - return (-1); - } - if ( status ) { - closesocket(s); - errno = status; - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s - %s", - "Error connecting to remote host", - strerror( status ) ); - return (-1); - } - } else { - /* pbm */ - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPConnectAttempt: %s\n", - "Select returned, but descriptor not set for connection.\n" ); - closesocket(s); - return (-1); - } - - return(s); -} - -/** - * xmlNanoHTTPConnectHost: - * @host: the host name - * @port: the port number - * - * Attempt a connection to the given host:port endpoint. It tries - * the multiple IP provided by the DNS if available. - * - * Returns -1 in case of failure, the file descriptor number otherwise - */ - -static int -xmlNanoHTTPConnectHost(const char *host, int port) -{ - struct hostent *h; - struct sockaddr *addr; - struct in_addr ia; - struct sockaddr_in sockin; - -#ifdef SUPPORT_IP6 - struct in6_addr ia6; - struct sockaddr_in6 sockin6; -#endif - int i; - int s; - -#if defined(SUPPORT_IP6) && defined(RES_USE_INET6) - if (!(_res.options & RES_INIT)) - res_init(); - _res.options |= RES_USE_INET6; -#endif - h = gethostbyname(host); - if (h == NULL) { - -/* - * Okay, I got fed up by the non-portability of this error message - * extraction code. it work on Linux, if it work on your platform - * and one want to enable it, send me the defined(foobar) needed - */ -#if defined(HAVE_NETDB_H) && defined(HOST_NOT_FOUND) && defined(linux) - const char *h_err_txt = ""; - - switch (h_errno) { - case HOST_NOT_FOUND: - h_err_txt = "Authoritive host not found"; - break; - - case TRY_AGAIN: - h_err_txt = - "Non-authoritive host not found or server failure."; - break; - - case NO_RECOVERY: - h_err_txt = - "Non-recoverable errors: FORMERR, REFUSED, or NOTIMP."; - break; - - case NO_ADDRESS: - h_err_txt = - "Valid name, no data record of requested type."; - break; - - default: - h_err_txt = "No error text defined."; - break; - } - xmlGenericError(xmlGenericErrorContext, - "xmlNanoHTTPConnectHost: %s '%s' - %s", - "Failed to resolve host", host, h_err_txt); -#else - xmlGenericError(xmlGenericErrorContext, - "xmlNanoHTTPConnectHost: %s '%s'", - "Failed to resolve host", host); -#endif - return (-1); - } - - for (i = 0; h->h_addr_list[i]; i++) { - if (h->h_addrtype == AF_INET) { - /* A records (IPv4) */ - memcpy(&ia, h->h_addr_list[i], h->h_length); - sockin.sin_family = h->h_addrtype; - sockin.sin_addr = ia; - sockin.sin_port = htons(port); - addr = (struct sockaddr *) &sockin; -#ifdef SUPPORT_IP6 - } else if (h->h_addrtype == AF_INET6) { - /* AAAA records (IPv6) */ - memcpy(&ia6, h->h_addr_list[i], h->h_length); - sockin6.sin_family = h->h_addrtype; - sockin6.sin_addr = ia6; - sockin6.sin_port = htons(port); - addr = (struct sockaddr *) &sockin6; -#endif - } else - break; /* for */ - - s = xmlNanoHTTPConnectAttempt(addr); - if (s != -1) - return (s); - } - -#ifdef DEBUG_HTTP - xmlGenericError(xmlGenericErrorContext, - "xmlNanoHTTPConnectHost: unable to connect to '%s'.\n", - host); -#endif - return (-1); -} - - -/** - * xmlNanoHTTPOpen: - * @URL: The URL to load - * @contentType: if available the Content-Type information will be - * returned at that location - * - * This function try to open a connection to the indicated resource - * via HTTP GET. - * - * Returns NULL in case of failure, otherwise a request handler. - * The contentType, if provided must be freed by the caller - */ - -void* -xmlNanoHTTPOpen(const char *URL, char **contentType) { - if (contentType != NULL) *contentType = NULL; - return(xmlNanoHTTPMethod(URL, NULL, NULL, contentType, NULL, 0)); -} - -/** - * xmlNanoHTTPOpenRedir: - * @URL: The URL to load - * @contentType: if available the Content-Type information will be - * returned at that location - * @redir: if available the redirected URL will be returned - * - * This function try to open a connection to the indicated resource - * via HTTP GET. - * - * Returns NULL in case of failure, otherwise a request handler. - * The contentType, if provided must be freed by the caller - */ - -void* -xmlNanoHTTPOpenRedir(const char *URL, char **contentType, char **redir) { - if (contentType != NULL) *contentType = NULL; - if (redir != NULL) *redir = NULL; - return(xmlNanoHTTPMethodRedir(URL, NULL, NULL, contentType, redir, NULL,0)); -} - -/** - * xmlNanoHTTPRead: - * @ctx: the HTTP context - * @dest: a buffer - * @len: the buffer length - * - * This function tries to read @len bytes from the existing HTTP connection - * and saves them in @dest. This is a blocking call. - * - * Returns the number of byte read. 0 is an indication of an end of connection. - * -1 indicates a parameter error. - */ -int -xmlNanoHTTPRead(void *ctx, void *dest, int len) { - xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; - - if (ctx == NULL) return(-1); - if (dest == NULL) return(-1); - if (len <= 0) return(0); - - while (ctxt->inptr - ctxt->inrptr < len) { - if (xmlNanoHTTPRecv(ctxt) <= 0) break; - } - if (ctxt->inptr - ctxt->inrptr < len) - len = ctxt->inptr - ctxt->inrptr; - memcpy(dest, ctxt->inrptr, len); - ctxt->inrptr += len; - return(len); -} - -/** - * xmlNanoHTTPClose: - * @ctx: the HTTP context - * - * This function closes an HTTP context, it ends up the connection and - * free all data related to it. - */ -void -xmlNanoHTTPClose(void *ctx) { - xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; - - if (ctx == NULL) return; - - xmlNanoHTTPFreeCtxt(ctxt); -} - -/** - * xmlNanoHTTPMethodRedir: - * @URL: The URL to load - * @method: the HTTP method to use - * @input: the input string if any - * @contentType: the Content-Type information IN and OUT - * @redir: the redirected URL OUT - * @headers: the extra headers - * @ilen: input length - * - * This function try to open a connection to the indicated resource - * via HTTP using the given @method, adding the given extra headers - * and the input buffer for the request content. - * - * Returns NULL in case of failure, otherwise a request handler. - * The contentType, or redir, if provided must be freed by the caller - */ - -void* -xmlNanoHTTPMethodRedir(const char *URL, const char *method, const char *input, - char **contentType, char **redir, - const char *headers, int ilen ) { - xmlNanoHTTPCtxtPtr ctxt; - char *bp, *p; - int blen, ret; - int head; - int xmt_bytes; - int nbRedirects = 0; - char *redirURL = NULL; - - if (URL == NULL) return(NULL); - if (method == NULL) method = "GET"; - xmlNanoHTTPInit(); - -retry: - if (redirURL == NULL) - ctxt = xmlNanoHTTPNewCtxt(URL); - else { - ctxt = xmlNanoHTTPNewCtxt(redirURL); - } - - if ( ctxt == NULL ) { - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: %s %s.", - "Unable to allocate HTTP context to URI", - ( ( redirURL == NULL ) ? URL : redirURL ) ); - return ( NULL ); - } - - if ((ctxt->protocol == NULL) || (strcmp(ctxt->protocol, "http"))) { - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: %s - %s.", - "Not a valid HTTP URI", - ( ( redirURL == NULL ) ? URL : redirURL ) ); - xmlNanoHTTPFreeCtxt(ctxt); - if (redirURL != NULL) xmlFree(redirURL); - return(NULL); - } - if (ctxt->hostname == NULL) { - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: %s - %s", - "Failed to identify host in URI", - ( ( redirURL == NULL ) ? URL : redirURL ) ); - xmlNanoHTTPFreeCtxt(ctxt); - if (redirURL != NULL) xmlFree(redirURL); - return(NULL); - } - if (proxy) { - blen = strlen(ctxt->hostname) * 2 + 16; - ret = xmlNanoHTTPConnectHost(proxy, proxyPort); - } - else { - blen = strlen(ctxt->hostname); - ret = xmlNanoHTTPConnectHost(ctxt->hostname, ctxt->port); - } - if (ret < 0) { - xmlNanoHTTPFreeCtxt(ctxt); - if (redirURL != NULL) xmlFree(redirURL); - return(NULL); - } - ctxt->fd = ret; - - if (input == NULL) - ilen = 0; - else - blen += 36; - - if (headers != NULL) - blen += strlen(headers) + 2; - if (contentType && *contentType) - blen += strlen(*contentType) + 16; - blen += strlen(method) + strlen(ctxt->path) + 24; - bp = xmlMalloc(blen); - if ( bp == NULL ) { - xmlNanoHTTPFreeCtxt( ctxt ); - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: %s", - "Error allocating HTTP header buffer." ); - return ( NULL ); - } - - p = bp; - - if (proxy) { - if (ctxt->port != 80) { - p += snprintf( p, blen - (p - bp), "%s http://%s:%d%s", - method, ctxt->hostname, - ctxt->port, ctxt->path ); - } - else - p += snprintf( p, blen - (p - bp), "%s http://%s%s", method, - ctxt->hostname, ctxt->path); - } - else - p += snprintf( p, blen - (p - bp), "%s %s", method, ctxt->path); - - p += snprintf( p, blen - (p - bp), " HTTP/1.0\r\nHost: %s\r\n", - ctxt->hostname); - - if (contentType != NULL && *contentType) - p += snprintf(p, blen - (p - bp), "Content-Type: %s\r\n", *contentType); - - if (headers != NULL) - p += snprintf( p, blen - (p - bp), "%s", headers ); - - if (input != NULL) - snprintf(p, blen - (p - bp), "Content-Length: %d\r\n\r\n", ilen ); - else - snprintf(p, blen - (p - bp), "\r\n"); - -#ifdef DEBUG_HTTP - xmlGenericError(xmlGenericErrorContext, - "-> %s%s", proxy? "(Proxy) " : "", bp); - if ((blen -= strlen(bp)+1) < 0) - xmlGenericError(xmlGenericErrorContext, - "ERROR: overflowed buffer by %d bytes\n", -blen); -#endif - ctxt->outptr = ctxt->out = bp; - ctxt->state = XML_NANO_HTTP_WRITE; - blen = strlen( ctxt->out ); - xmt_bytes = xmlNanoHTTPSend(ctxt, ctxt->out, blen ); -#ifdef DEBUG_HTTP - if ( xmt_bytes != blen ) - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: Only %d of %d %s %s\n", - xmt_bytes, blen, - "bytes of HTTP headers sent to host", - ctxt->hostname ); -#endif - - if ( input != NULL ) { - xmt_bytes = xmlNanoHTTPSend( ctxt, input, ilen ); - -#ifdef DEBUG_HTTP - if ( xmt_bytes != ilen ) - xmlGenericError( xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: Only %d of %d %s %s\n", - xmt_bytes, ilen, - "bytes of HTTP content sent to host", - ctxt->hostname ); -#endif - } - - ctxt->state = XML_NANO_HTTP_READ; - head = 1; - - while ((p = xmlNanoHTTPReadLine(ctxt)) != NULL) { - if (head && (*p == 0)) { - head = 0; - ctxt->content = ctxt->inrptr; - xmlFree(p); - break; - } - xmlNanoHTTPScanAnswer(ctxt, p); - -#ifdef DEBUG_HTTP - xmlGenericError(xmlGenericErrorContext, "<- %s\n", p); -#endif - xmlFree(p); - } - - if ((ctxt->location != NULL) && (ctxt->returnValue >= 300) && - (ctxt->returnValue < 400)) { -#ifdef DEBUG_HTTP - xmlGenericError(xmlGenericErrorContext, - "\nRedirect to: %s\n", ctxt->location); -#endif - while ( xmlNanoHTTPRecv(ctxt) > 0 ) ; - if (nbRedirects < XML_NANO_HTTP_MAX_REDIR) { - nbRedirects++; - if (redirURL != NULL) - xmlFree(redirURL); - redirURL = xmlMemStrdup(ctxt->location); - xmlNanoHTTPFreeCtxt(ctxt); - goto retry; - } - xmlNanoHTTPFreeCtxt(ctxt); - if (redirURL != NULL) xmlFree(redirURL); -#ifdef DEBUG_HTTP - xmlGenericError(xmlGenericErrorContext, - "xmlNanoHTTPMethodRedir: Too many redirects, aborting ...\n"); -#endif - return(NULL); - } - - if (contentType != NULL) { - if (ctxt->contentType != NULL) - *contentType = xmlMemStrdup(ctxt->contentType); - else - *contentType = NULL; - } - - if ((redir != NULL) && (redirURL != NULL)) { - *redir = redirURL; - } else { - if (redirURL != NULL) - xmlFree(redirURL); - if (redir != NULL) - *redir = NULL; - } - -#ifdef DEBUG_HTTP - if (ctxt->contentType != NULL) - xmlGenericError(xmlGenericErrorContext, - "\nCode %d, content-type '%s'\n\n", - ctxt->returnValue, ctxt->contentType); - else - xmlGenericError(xmlGenericErrorContext, - "\nCode %d, no content-type\n\n", - ctxt->returnValue); -#endif - - return((void *) ctxt); -} - -/** - * xmlNanoHTTPMethod: - * @URL: The URL to load - * @method: the HTTP method to use - * @input: the input string if any - * @contentType: the Content-Type information IN and OUT - * @headers: the extra headers - * @ilen: input length - * - * This function try to open a connection to the indicated resource - * via HTTP using the given @method, adding the given extra headers - * and the input buffer for the request content. - * - * Returns NULL in case of failure, otherwise a request handler. - * The contentType, if provided must be freed by the caller - */ - -void* -xmlNanoHTTPMethod(const char *URL, const char *method, const char *input, - char **contentType, const char *headers, int ilen) { - return(xmlNanoHTTPMethodRedir(URL, method, input, contentType, - NULL, headers, ilen)); -} - -/** - * xmlNanoHTTPFetch: - * @URL: The URL to load - * @filename: the filename where the content should be saved - * @contentType: if available the Content-Type information will be - * returned at that location - * - * This function try to fetch the indicated resource via HTTP GET - * and save it's content in the file. - * - * Returns -1 in case of failure, 0 incase of success. The contentType, - * if provided must be freed by the caller - */ -int -xmlNanoHTTPFetch(const char *URL, const char *filename, char **contentType) { - void *ctxt = NULL; - char *buf = NULL; - int fd; - int len; - - ctxt = xmlNanoHTTPOpen(URL, contentType); - if (ctxt == NULL) return(-1); - - if (!strcmp(filename, "-")) - fd = 0; - else { - fd = open(filename, O_CREAT | O_WRONLY, 00644); - if (fd < 0) { - xmlNanoHTTPClose(ctxt); - if ((contentType != NULL) && (*contentType != NULL)) { - xmlFree(*contentType); - *contentType = NULL; - } - return(-1); - } - } - - xmlNanoHTTPFetchContent( ctxt, &buf, &len ); - if ( len > 0 ) { - write(fd, buf, len); - } - - xmlNanoHTTPClose(ctxt); - close(fd); - return(0); -} - -/** - * xmlNanoHTTPSave: - * @ctxt: the HTTP context - * @filename: the filename where the content should be saved - * - * This function saves the output of the HTTP transaction to a file - * It closes and free the context at the end - * - * Returns -1 in case of failure, 0 incase of success. - */ -int -xmlNanoHTTPSave(void *ctxt, const char *filename) { - char *buf = NULL; - int fd; - int len; - - if (ctxt == NULL) return(-1); - - if (!strcmp(filename, "-")) - fd = 0; - else { - fd = open(filename, O_CREAT | O_WRONLY); - if (fd < 0) { - xmlNanoHTTPClose(ctxt); - return(-1); - } - } - - xmlNanoHTTPFetchContent( ctxt, &buf, &len ); - if ( len > 0 ) { - write(fd, buf, len); - } - - xmlNanoHTTPClose(ctxt); - return(0); -} - -/** - * xmlNanoHTTPReturnCode: - * @ctx: the HTTP context - * - * Get the latest HTTP return code received - * - * Returns the HTTP return code for the request. - */ -int -xmlNanoHTTPReturnCode(void *ctx) { - xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; - - if (ctxt == NULL) return(-1); - - return(ctxt->returnValue); -} - -/** - * xmlNanoHTTPAuthHeader: - * @ctx: the HTTP context - * - * Get the authentication header of an HTTP context - * - * Returns the stashed value of the WWW-Authenticate or Proxy-Authenticate - * header. - */ -const char * -xmlNanoHTTPAuthHeader(void *ctx) { - xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; - - if (ctxt == NULL) return(NULL); - - return(ctxt->authHeader); -} - -/** - * xmlNanoHTTPContentLength: - * @ctx: the HTTP context - * - * Provides the specified content length from the HTTP header. - * - * Return the specified content length from the HTTP header. Note that - * a value of -1 indicates that the content length element was not included in - * the response header. - */ -int -xmlNanoHTTPContentLength( void * ctx ) { - xmlNanoHTTPCtxtPtr ctxt = ctx; - - return ( ( ctxt == NULL ) ? -1 : ctxt->ContentLength ); -} - -/** - * xmlNanoHTTPFetchContent: - * @ctx: the HTTP context - * @ptr: pointer to set to the content buffer. - * @len: integer pointer to hold the length of the content - * - * Check if all the content was read - * - * Returns 0 if all the content was read and available, returns - * -1 if received content length was less than specified or an error - * occurred. - */ -int -xmlNanoHTTPFetchContent( void * ctx, char ** ptr, int * len ) { - xmlNanoHTTPCtxtPtr ctxt = ctx; - - int rc = 0; - int cur_lgth; - int rcvd_lgth; - int dummy_int; - char * dummy_ptr = NULL; - - /* Dummy up return input parameters if not provided */ - - if ( len == NULL ) - len = &dummy_int; - - if ( ptr == NULL ) - ptr = &dummy_ptr; - - /* But can't work without the context pointer */ - - if ( ( ctxt == NULL ) || ( ctxt->content == NULL ) ) { - *len = 0; - *ptr = NULL; - return ( -1 ); - } - - rcvd_lgth = ctxt->inptr - ctxt->content; - - while ( (cur_lgth = xmlNanoHTTPRecv( ctxt )) > 0 ) { - - rcvd_lgth += cur_lgth; - if ( (ctxt->ContentLength > 0) && (rcvd_lgth >= ctxt->ContentLength) ) - break; - } - - *ptr = ctxt->content; - *len = rcvd_lgth; - - if ( ( ctxt->ContentLength > 0 ) && ( rcvd_lgth < ctxt->ContentLength ) ) - rc = -1; - else if ( rcvd_lgth == 0 ) - rc = -1; - - return ( rc ); -} - -#ifdef STANDALONE -int main(int argc, char **argv) { - char *contentType = NULL; - - if (argv[1] != NULL) { - if (argv[2] != NULL) - xmlNanoHTTPFetch(argv[1], argv[2], &contentType); - else - xmlNanoHTTPFetch(argv[1], "-", &contentType); - if (contentType != NULL) xmlFree(contentType); - } else { - xmlGenericError(xmlGenericErrorContext, - "%s: minimal HTTP GET implementation\n", argv[0]); - xmlGenericError(xmlGenericErrorContext, - "\tusage %s [ URL [ filename ] ]\n", argv[0]); - } - xmlNanoHTTPCleanup(); - xmlMemoryDump(); - return(0); -} -#endif /* STANDALONE */ -#else /* !LIBXML_HTTP_ENABLED */ -#ifdef STANDALONE -#include <stdio.h> -int main(int argc, char **argv) { - xmlGenericError(xmlGenericErrorContext, - "%s : HTTP support not compiled in\n", argv[0]); - return(0); -} -#endif /* STANDALONE */ -#endif /* LIBXML_HTTP_ENABLED */ |