+++ /dev/null
-/*
- * Copyright (c) 1987-2021 by the citadel.org team
- *
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 3.
- *
- * This program 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 General Public License for more details.
- */
-
-/*
- * Uncomment this to log all communications with the Citadel server
-#define SERV_TRACE 1
- */
-
-#include "webcit.h"
-#include "webserver.h"
-
-long MaxRead = -1; /* should we do READ scattered or all at once? */
-
-/*
- * register the timeout
- */
-RETSIGTYPE timeout(int signum)
-{
- syslog(LOG_WARNING, "Connection timed out; unable to reach citserver\n");
- /* no exit here, since we need to server the connection unreachable thing. exit(3); */
-}
-
-
-/*
- * Client side - connect to a unix domain socket
- */
-int uds_connectsock(char *sockpath)
-{
- struct sockaddr_un addr;
- int s;
-
- memset(&addr, 0, sizeof(addr));
- addr.sun_family = AF_UNIX;
- strncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
-
- s = socket(AF_UNIX, SOCK_STREAM, 0);
- if (s < 0) {
- syslog(LOG_WARNING, "Can't create socket [%s]: %s\n", sockpath, strerror(errno));
- return(-1);
- }
-
- if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- syslog(LOG_WARNING, "Can't connect [%s]: %s\n", sockpath, strerror(errno));
- close(s);
- return(-1);
- }
- return s;
-}
-
-
-/*
- * TCP client - connect to a host/port
- */
-int tcp_connectsock(char *host, char *service)
-{
- struct in6_addr serveraddr;
- struct addrinfo hints;
- struct addrinfo *res = NULL;
- struct addrinfo *ai = NULL;
- int rc = (-1);
- int s = (-1);
-
- if ((host == NULL) || IsEmptyStr(host))
- return (-1);
- if ((service == NULL) || IsEmptyStr(service))
- return (-1);
-
- syslog(LOG_DEBUG, "tcp_connectsock(%s,%s)\n", host, service);
-
- memset(&hints, 0x00, sizeof(hints));
- hints.ai_flags = AI_NUMERICSERV;
- hints.ai_family = AF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
-
- /*
- * Handle numeric IPv4 and IPv6 addresses
- */
- rc = inet_pton(AF_INET, host, &serveraddr);
- if (rc == 1) { /* dotted quad */
- hints.ai_family = AF_INET;
- hints.ai_flags |= AI_NUMERICHOST;
- } else {
- rc = inet_pton(AF_INET6, host, &serveraddr);
- if (rc == 1) { /* IPv6 address */
- hints.ai_family = AF_INET6;
- hints.ai_flags |= AI_NUMERICHOST;
- }
- }
-
- /* Begin the connection process */
-
- rc = getaddrinfo(host, service, &hints, &res);
- if (rc != 0) {
- syslog(LOG_DEBUG, "%s: %s\n", host, gai_strerror(rc));
- freeaddrinfo(res);
- return(-1);
- }
-
- /*
- * Try all available addresses until we connect to one or until we run out.
- */
- for (ai = res; ai != NULL; ai = ai->ai_next) {
-
- if (ai->ai_family == AF_INET) syslog(LOG_DEBUG, "Trying IPv4\n");
- else if (ai->ai_family == AF_INET6) syslog(LOG_DEBUG, "Trying IPv6\n");
- else syslog(LOG_WARNING, "This is going to fail.\n");
-
- s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
- if (s < 0) {
- syslog(LOG_WARNING, "socket() failed: %s\n", strerror(errno));
- freeaddrinfo(res);
- return(-1);
- }
- rc = connect(s, ai->ai_addr, ai->ai_addrlen);
- if (rc >= 0) {
- int fdflags;
- freeaddrinfo(res);
-
- fdflags = fcntl(rc, F_GETFL);
- if (fdflags < 0) {
- syslog(LOG_ERR,
- "unable to get socket %d flags! %s \n",
- rc,
- strerror(errno));
- close(rc);
- return -1;
- }
- fdflags = fdflags | O_NONBLOCK;
- if (fcntl(rc, F_SETFL, fdflags) < 0) {
- syslog(LOG_ERR,
- "unable to set socket %d nonblocking flags! %s \n",
- rc,
- strerror(errno));
- close(s);
- return -1;
- }
-
- return(s);
- }
- else {
- syslog(LOG_WARNING, "connect() failed: %s\n", strerror(errno));
- close(s);
- }
- }
- freeaddrinfo(res);
- return(-1);
-}
-
-
-/*
- * input string from pipe
- */
-int serv_getln(char *strbuf, int bufsize)
-{
- int len;
-
- *strbuf = '\0';
- StrBuf_ServGetln(WC->MigrateReadLineBuf);
- len = StrLength(WC->MigrateReadLineBuf);
- if (len > bufsize)
- len = bufsize - 1;
- memcpy(strbuf, ChrPtr(WC->MigrateReadLineBuf), len);
- FlushStrBuf(WC->MigrateReadLineBuf);
- strbuf[len] = '\0';
-#ifdef SERV_TRACE
- syslog(LOG_DEBUG, "%3d<<<%s\n", WC->serv_sock, strbuf);
-#endif
- return len;
-}
-
-
-int StrBuf_ServGetln(StrBuf *buf)
-{
- const char *ErrStr = NULL;
- int rc;
-
- if (!WC->connected)
- return -1;
-
- FlushStrBuf(buf);
- rc = StrBufTCP_read_buffered_line_fast(buf,
- WC->ReadBuf,
- &WC->ReadPos,
- &WC->serv_sock,
- 5, 1,
- &ErrStr);
- if (rc < 0)
- {
- syslog(LOG_INFO, "StrBuf_ServGetln(): Server connection broken: %s\n",
- (ErrStr)?ErrStr:"");
- wc_backtrace(LOG_INFO);
- if (WC->serv_sock > 0) close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- }
-#ifdef SERV_TRACE
- else
- {
- long pos = 0;
- if (WC->ReadPos != NULL)
- pos = WC->ReadPos - ChrPtr(WC->ReadBuf);
- syslog(LOG_DEBUG, "%3d<<<[%ld]%s\n", WC->serv_sock, pos, ChrPtr(buf));
- }
-#endif
- return rc;
-}
-
-int StrBuf_ServGetBLOBBuffered(StrBuf *buf, long BlobSize)
-{
- const char *ErrStr;
- int rc;
-
- rc = StrBufReadBLOBBuffered(buf,
- WC->ReadBuf,
- &WC->ReadPos,
- &WC->serv_sock,
- 1,
- BlobSize,
- NNN_TERM,
- &ErrStr);
- if (rc < 0)
- {
- syslog(LOG_INFO, "StrBuf_ServGetBLOBBuffered(): Server connection broken: %s\n",
- (ErrStr)?ErrStr:"");
- wc_backtrace(LOG_INFO);
- if (WC->serv_sock > 0) close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- }
-#ifdef SERV_TRACE
- else
- syslog(LOG_DEBUG, "%3d<<<BLOB: %d bytes\n", WC->serv_sock, StrLength(buf));
-#endif
-
- return rc;
-}
-
-int StrBuf_ServGetBLOB(StrBuf *buf, long BlobSize)
-{
- const char *ErrStr;
- int rc;
-
- WC->ReadPos = NULL;
- rc = StrBufReadBLOB(buf, &WC->serv_sock, 1, BlobSize, &ErrStr);
- if (rc < 0)
- {
- syslog(LOG_INFO, "StrBuf_ServGetBLOB(): Server connection broken: %s\n",
- (ErrStr)?ErrStr:"");
- wc_backtrace(LOG_INFO);
- if (WC->serv_sock > 0) close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- }
-#ifdef SERV_TRACE
- else
- syslog(LOG_DEBUG, "%3d<<<BLOB: %d bytes\n", WC->serv_sock, StrLength(buf));
-#endif
-
- return rc;
-}
-
-
-void FlushReadBuf (void)
-{
- long len;
- const char *pch;
- const char *pche;
-
- len = StrLength(WC->ReadBuf);
- if ((len > 0) &&
- (WC->ReadPos != NULL) &&
- (WC->ReadPos != StrBufNOTNULL))
-
- {
- pch = ChrPtr(WC->ReadBuf);
- pche = pch + len;
- if (WC->ReadPos != pche)
- {
- syslog(LOG_ERR,
- "ERROR: somebody didn't eat his soup! Remaing Chars: %ld [%s]\n",
- (long)(pche - WC->ReadPos),
- pche
- );
- syslog(LOG_ERR,
- "--------------------------------------------------------------------------------\n"
- "Whole buf: [%s]\n"
- "--------------------------------------------------------------------------------\n",
- pch);
- AppendImportantMessage(HKEY("Suppenkasper alert! watch your webcit logfile and get connected to your favourite opensource Crew."));
- }
- }
-
- FlushStrBuf(WC->ReadBuf);
- WC->ReadPos = NULL;
-
-
-}
-
-
-/*
- * send binary to server
- * buf the buffer to write to citadel server
- * nbytes how many bytes to send to citadel server
- */
-int serv_write(const char *buf, int nbytes)
-{
- int bytes_written = 0;
- int retval;
-
- FlushReadBuf();
- while (bytes_written < nbytes) {
- retval = write(WC->serv_sock, &buf[bytes_written],
- nbytes - bytes_written);
- if (retval < 1) {
- const char *ErrStr = strerror(errno);
- syslog(LOG_INFO, "serv_write(): Server connection broken: %s\n",
- (ErrStr)?ErrStr:"");
- if (WC->serv_sock > 0) close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- return 0;
- }
- bytes_written = bytes_written + retval;
- }
- return 1;
-}
-
-
-/*
- * send line to server
- * string the line to send to the citadel server
- */
-int serv_puts(const char *string)
-{
-#ifdef SERV_TRACE
- syslog(LOG_DEBUG, "%3d>>>%s\n", WC->serv_sock, string);
-#endif
- FlushReadBuf();
-
- if (!serv_write(string, strlen(string)))
- return 0;
- return serv_write("\n", 1);
-}
-
-/*
- * send line to server
- * string the line to send to the citadel server
- */
-int serv_putbuf(const StrBuf *string)
-{
-#ifdef SERV_TRACE
- syslog(LOG_DEBUG, "%3d>>>%s\n", WC->serv_sock, ChrPtr(string));
-#endif
- FlushReadBuf();
-
- if (!serv_write(ChrPtr(string), StrLength(string)))
- return 0;
- return serv_write("\n", 1);
-}
-
-
-/*
- * convenience function to send stuff to the server
- * format the formatstring
- * ... the entities to insert into format
- */
-int serv_printf(const char *format,...)
-{
- va_list arg_ptr;
- char buf[SIZ];
- size_t len;
- int rc;
-
- FlushReadBuf();
-
- va_start(arg_ptr, format);
- vsnprintf(buf, sizeof buf, format, arg_ptr);
- va_end(arg_ptr);
-
- len = strlen(buf);
- buf[len++] = '\n';
- buf[len] = '\0';
- rc = serv_write(buf, len);
-#ifdef SERV_TRACE
- syslog(LOG_DEBUG, ">>>%s", buf);
-#endif
- return rc;
-}
-
-
-/*
- * Read binary data from server into memory using a series of server READ commands.
- * returns the read content as StrBuf
- */
-int serv_read_binary(StrBuf *Ret, size_t total_len, StrBuf *Buf)
-{
- size_t bytes_read = 0;
- size_t this_block = 0;
- int rc = 6;
- int ServerRc = 6;
-
- if (Ret == NULL) {
- return -1;
- }
-
- while ((bytes_read < total_len) && (ServerRc == 6)) {
-
- if (WC->serv_sock==-1) {
- FlushStrBuf(Ret);
- return -1;
- }
-
- serv_printf("READ "SIZE_T_FMT"|"SIZE_T_FMT, bytes_read, total_len-bytes_read);
- if ( (rc = StrBuf_ServGetln(Buf) > 0) &&
- (ServerRc = GetServerStatus(Buf, NULL), ServerRc == 6) )
- {
- if (rc < 0)
- return rc;
- StrBufCutLeft(Buf, 4);
- this_block = StrTol(Buf);
- rc = StrBuf_ServGetBLOBBuffered(Ret, this_block);
- if (rc < 0) {
- syslog(LOG_INFO, "Server connection broken during download\n");
- wc_backtrace(LOG_INFO);
- if (WC->serv_sock > 0) close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- return rc;
- }
- bytes_read += rc;
- }
- }
-
- return StrLength(Ret);
-}
-
-
-int client_write(StrBuf *ThisBuf)
-{
- const char *ptr, *eptr;
- long count;
- ssize_t res = 0;
- fd_set wset;
- int fdflags;
-
- ptr = ChrPtr(ThisBuf);
- count = StrLength(ThisBuf);
- eptr = ptr + count;
-
- fdflags = fcntl(WC->Hdr->http_sock, F_GETFL);
-
- while ((ptr < eptr) && (WC->Hdr->http_sock != -1)) {
- if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
- FD_ZERO(&wset);
- FD_SET(WC->Hdr->http_sock, &wset);
- if (select(WC->Hdr->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
- syslog(LOG_INFO, "client_write: Socket select failed (%s)\n", strerror(errno));
- return -1;
- }
- }
-
- if ((WC->Hdr->http_sock == -1) ||
- ((res = write(WC->Hdr->http_sock, ptr, count)),
- (res == -1)))
- {
- syslog(LOG_INFO, "client_write: Socket write failed (%s)\n", strerror(errno));
- wc_backtrace(LOG_INFO);
- return -1;
- }
- count -= res;
- ptr += res;
- }
- return 0;
-}
-
-
-int
-read_serv_chunk(
-
- StrBuf *Buf,
- size_t total_len,
- size_t *bytes_read
- )
-{
- int rc;
- int ServerRc;
-
- serv_printf("READ "SIZE_T_FMT"|"SIZE_T_FMT, *bytes_read, total_len-(*bytes_read));
- if ( (rc = StrBuf_ServGetln(Buf) > 0) &&
- (ServerRc = GetServerStatus(Buf, NULL), ServerRc == 6) )
- {
- size_t this_block = 0;
-
- if (rc < 0)
- return rc;
-
- StrBufCutLeft(Buf, 4);
- this_block = StrTol(Buf);
- rc = StrBuf_ServGetBLOBBuffered(WC->WBuf, this_block);
- if (rc < 0) {
- syslog(LOG_INFO, "Server connection broken during download\n");
- wc_backtrace(LOG_INFO);
- if (WC->serv_sock > 0) close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- return rc;
- }
- *bytes_read += rc;
- }
- return 6;
-}
-
-static inline int send_http(StrBuf *Buf)
-{
-#ifdef HAVE_OPENSSL
- if (is_https)
- return client_write_ssl(Buf);
- else
-#endif
- return client_write(Buf);
-}
-/*
- * Read binary data from server into memory using a series of server READ commands.
- * returns the read content as StrBuf
- */
-void serv_read_binary_to_http(StrBuf *MimeType, size_t total_len, int is_static, int detect_mime)
-{
- int ServerRc = 6;
- size_t bytes_read = 0;
- int first = 1;
- int client_con_state = 0;
- int chunked = 0;
- int is_gzip = 0;
- const char *Err = NULL;
- StrBuf *BufHeader = NULL;
- StrBuf *Buf;
- StrBuf *pBuf = NULL;
- vStreamT *SC = NULL;
- IOBuffer ReadBuffer;
- IOBuffer WriteBuffer;
-
-
- Buf = NewStrBuf();
-
- if (WC->Hdr->HaveRange)
- {
- WC->Hdr->HaveRange++;
- WC->Hdr->TotalBytes = total_len;
- /* open range? or beyound file border? correct the numbers. */
- if ((WC->Hdr->RangeTil == -1) || (WC->Hdr->RangeTil>= total_len))
- WC->Hdr->RangeTil = total_len - 1;
- bytes_read = WC->Hdr->RangeStart;
- total_len = WC->Hdr->RangeTil;
- }
- else
- chunked = total_len > SIZ * 10; /* TODO: disallow for HTTP / 1.0 */
-
- if (chunked)
- {
- BufHeader = NewStrBuf();
- }
-
- if ((detect_mime != 0) && (bytes_read != 0))
- {
- /* need to read first chunk to detect mime, though the client doesn't care */
- size_t bytes_read = 0;
- const char *CT;
-
- ServerRc = read_serv_chunk(
- Buf,
- total_len,
- &bytes_read);
-
- if (ServerRc != 6)
- {
- FreeStrBuf(&BufHeader);
- FreeStrBuf(&Buf);
- return;
- }
- CT = GuessMimeType(SKEY(WC->WBuf));
- FlushStrBuf(WC->WBuf);
- StrBufPlain(MimeType, CT, -1);
- CheckGZipCompressionAllowed(SKEY(MimeType));
- detect_mime = 0;
- FreeStrBuf(&Buf);
- }
-
- memset(&WriteBuffer, 0, sizeof(IOBuffer));
- if (chunked && !DisableGzip && WC->Hdr->HR.gzip_ok)
- {
- is_gzip = 1;
- SC = StrBufNewStreamContext (eZLibEncode, &Err);
- if (SC == NULL) {
- syslog(LOG_ERR, "Error while initializing stream context: %s", Err);
- FreeStrBuf(&Buf);
- return;
- }
-
- memset(&ReadBuffer, 0, sizeof(IOBuffer));
- ReadBuffer.Buf = WC->WBuf;
-
- WriteBuffer.Buf = NewStrBufPlain(NULL, SIZ*2);;
- pBuf = WriteBuffer.Buf;
- }
- else
- {
- pBuf = WC->WBuf;
- }
-
- if (!detect_mime)
- {
- http_transmit_headers(ChrPtr(MimeType), is_static, chunked, is_gzip);
-
- if (send_http(WC->HBuf) < 0)
- {
- FreeStrBuf(&Buf);
- FreeStrBuf(&WriteBuffer.Buf);
- FreeStrBuf(&BufHeader);
- if (StrBufDestroyStreamContext(eZLibEncode, &SC, &Err) && Err) {
- syslog(LOG_ERR, "Error while destroying stream context: %s", Err);
- }
- return;
- }
- }
-
- while ((bytes_read < total_len) &&
- (ServerRc == 6) &&
- (client_con_state == 0))
- {
-
- if (WC->serv_sock==-1) {
- FlushStrBuf(WC->WBuf);
- FreeStrBuf(&Buf);
- FreeStrBuf(&WriteBuffer.Buf);
- FreeStrBuf(&BufHeader);
- StrBufDestroyStreamContext(eZLibEncode, &SC, &Err);
- if (StrBufDestroyStreamContext(eZLibEncode, &SC, &Err) && Err) {
- syslog(LOG_ERR, "Error while destroying stream context: %s", Err);
- }
- return;
- }
-
- ServerRc = read_serv_chunk(
- Buf,
- total_len,
- &bytes_read);
- if (ServerRc != 6)
- break;
-
- if (detect_mime)
- {
- const char *CT;
- detect_mime = 0;
-
- CT = GuessMimeType(SKEY(WC->WBuf));
- StrBufPlain(MimeType, CT, -1);
- if (is_gzip) {
- CheckGZipCompressionAllowed(SKEY(MimeType));
- is_gzip = WC->Hdr->HR.gzip_ok;
- }
- http_transmit_headers(ChrPtr(MimeType), is_static, chunked, is_gzip);
-
- client_con_state = send_http(WC->HBuf);
- }
-
- if (is_gzip)
- {
- int done = (bytes_read == total_len);
- while ((IOBufferStrLength(&ReadBuffer) > 0) && (client_con_state == 0)) {
- int rc;
-
- do {
- rc = StrBufStreamTranscode(eZLibEncode, &WriteBuffer, &ReadBuffer, NULL, -1, SC, done, &Err);
-
- if (StrLength (pBuf) > 0) {
- StrBufPrintf(BufHeader, "%s%x\r\n",
- (first)?"":"\r\n",
- StrLength (pBuf));
- first = 0;
- client_con_state = send_http(BufHeader);
- if (client_con_state == 0) {
- client_con_state = send_http(pBuf);
- }
- FlushStrBuf(pBuf);
- }
- } while ((rc == 1) && (StrLength(pBuf) > 0));
- }
- FlushStrBuf(WC->WBuf);
- }
- else {
- if ((chunked) && (client_con_state == 0))
- {
- StrBufPrintf(BufHeader, "%s%x\r\n",
- (first)?"":"\r\n",
- StrLength (pBuf));
- first = 0;
- client_con_state = send_http(BufHeader);
- }
-
- if (client_con_state == 0)
- client_con_state = send_http(pBuf);
-
- FlushStrBuf(pBuf);
- }
- }
-
- if (SC && StrBufDestroyStreamContext(eZLibEncode, &SC, &Err) && Err) {
- syslog(LOG_ERR, "Error while destroying stream context: %s", Err);
- }
- FreeStrBuf(&WriteBuffer.Buf);
- if ((chunked) && (client_con_state == 0))
- {
- StrBufPlain(BufHeader, HKEY("\r\n0\r\n\r\n"));
- if (send_http(BufHeader) < 0)
- {
- FreeStrBuf(&Buf);
- FreeStrBuf(&BufHeader);
- return;
- }
- }
- FreeStrBuf(&BufHeader);
- FreeStrBuf(&Buf);
-}
-
-int ClientGetLine(ParsedHttpHdrs *Hdr, StrBuf *Target)
-{
- const char *Error;
-#ifdef HAVE_OPENSSL
- const char *pch, *pchs;
- int rlen, len, retval = 0;
-
- if (is_https) {
- int ntries = 0;
- if (StrLength(Hdr->ReadBuf) > 0)
- {
- pchs = ChrPtr(Hdr->ReadBuf);
- pch = strchr(pchs, '\n');
- if (pch != NULL) {
- rlen = 0;
- len = pch - pchs;
- if (len > 0 && (*(pch - 1) == '\r') )
- rlen ++;
- StrBufSub(Target, Hdr->ReadBuf, 0, len - rlen);
- StrBufCutLeft(Hdr->ReadBuf, len + 1);
- return len - rlen;
- }
- }
-
- while (retval == 0) {
- pch = NULL;
- pchs = ChrPtr(Hdr->ReadBuf);
- if (*pchs != '\0')
- pch = strchr(pchs, '\n');
- if (pch == NULL) {
- retval = client_read_sslbuffer(Hdr->ReadBuf, SLEEPING);
- pchs = ChrPtr(Hdr->ReadBuf);
- pch = strchr(pchs, '\n');
- if (pch == NULL)
- retval = 0;
- }
- if (retval == 0) {
- sleeeeeeeeeep(1);
- ntries ++;
- }
- if (ntries > 10)
- return 0;
- }
- if ((retval > 0) && (pch != NULL)) {
- rlen = 0;
- len = pch - pchs;
- if (len > 0 && (*(pch - 1) == '\r') )
- rlen ++;
- StrBufSub(Target, Hdr->ReadBuf, 0, len - rlen);
- StrBufCutLeft(Hdr->ReadBuf, len + 1);
- return len - rlen;
-
- }
- else
- return -1;
- }
- else
-#endif
- return StrBufTCP_read_buffered_line_fast(Target,
- Hdr->ReadBuf,
- &Hdr->Pos,
- &Hdr->http_sock,
- 5,
- 1,
- &Error);
-}
-
-
-/*
- * This is a generic function to set up a master socket for listening on
- * a TCP port. The server shuts down if the bind fails. (IPv4/IPv6 version)
- *
- * ip_addr IP address to bind
- * port_number port number to bind
- * queue_len number of incoming connections to allow in the queue
- */
-int webcit_tcp_server(const char *ip_addr, int port_number, int queue_len)
-{
- const char *ipv4broadcast = "0.0.0.0";
- int IsDefault = 0;
- struct protoent *p;
- struct sockaddr_in6 sin6;
- struct sockaddr_in sin4;
- int s, i, b;
- int ip_version = 6;
-
-retry:
- memset(&sin6, 0, sizeof(sin6));
- memset(&sin4, 0, sizeof(sin4));
- sin6.sin6_family = AF_INET6;
- sin4.sin_family = AF_INET;
-
- if ( (ip_addr == NULL) /* any IPv6 */
- || (IsEmptyStr(ip_addr))
- || (!strcmp(ip_addr, "*"))
- ) {
- IsDefault = 1;
- ip_version = 6;
- sin6.sin6_addr = in6addr_any;
- }
- else if (!strcmp(ip_addr, "0.0.0.0")) /* any IPv4 */
- {
- ip_version = 4;
- sin4.sin_addr.s_addr = INADDR_ANY;
- }
- else if ((strchr(ip_addr, '.')) && (!strchr(ip_addr, ':'))) /* specific IPv4 */
- {
- ip_version = 4;
- if (inet_pton(AF_INET, ip_addr, &sin4.sin_addr) <= 0) {
- syslog(LOG_WARNING, "Error binding to [%s] : %s\n", ip_addr, strerror(errno));
- return (-WC_EXIT_BIND);
- }
- }
- else /* specific IPv6 */
- {
- ip_version = 6;
- if (inet_pton(AF_INET6, ip_addr, &sin6.sin6_addr) <= 0) {
- syslog(LOG_WARNING, "Error binding to [%s] : %s\n", ip_addr, strerror(errno));
- return (-WC_EXIT_BIND);
- }
- }
-
- if (port_number == 0) {
- syslog(LOG_WARNING, "Cannot start: no port number specified.\n");
- return (-WC_EXIT_BIND);
- }
- sin6.sin6_port = htons((u_short) port_number);
- sin4.sin_port = htons((u_short) port_number);
-
- p = getprotobyname("tcp");
-
- s = socket( ((ip_version == 6) ? PF_INET6 : PF_INET), SOCK_STREAM, (p->p_proto));
- if (s < 0) {
- if (IsDefault && (errno == EAFNOSUPPORT))
- {
- s = 0;
- ip_addr = ipv4broadcast;
- goto retry;
- }
- syslog(LOG_WARNING, "Can't create a listening socket: %s\n", strerror(errno));
- return (-WC_EXIT_BIND);
- }
- /* Set some socket options that make sense. */
- i = 1;
- setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
-
- if (ip_version == 6) {
- b = bind(s, (struct sockaddr *) &sin6, sizeof(sin6));
- }
- else {
- b = bind(s, (struct sockaddr *) &sin4, sizeof(sin4));
- }
-
- if (b < 0) {
- syslog(LOG_ERR, "Can't bind: %s\n", strerror(errno));
- close(s);
- return (-WC_EXIT_BIND);
- }
-
- if (listen(s, queue_len) < 0) {
- syslog(LOG_ERR, "Can't listen: %s\n", strerror(errno));
- close(s);
- return (-WC_EXIT_BIND);
- }
- return (s);
-}
-
-
-/*
- * Create a Unix domain socket and listen on it
- * sockpath - file name of the unix domain socket
- * queue_len - Number of incoming connections to allow in the queue
- */
-int webcit_uds_server(char *sockpath, int queue_len) {
- struct sockaddr_un addr;
- int s;
- int i;
- int actual_queue_len;
-
- actual_queue_len = queue_len;
- if (actual_queue_len < 5) actual_queue_len = 5;
-
- i = unlink(sockpath);
- if ((i != 0) && (errno != ENOENT)) {
- syslog(LOG_WARNING, "webcit: can't unlink %s: %s\n",
- sockpath, strerror(errno));
- return (-WC_EXIT_BIND);
- }
-
- memset(&addr, 0, sizeof(addr));
- addr.sun_family = AF_UNIX;
- safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
-
- s = socket(AF_UNIX, SOCK_STREAM, 0);
- if (s < 0) {
- syslog(LOG_WARNING, "webcit: Can't create a unix domain socket: %s\n", strerror(errno));
- return (-WC_EXIT_BIND);
- }
-
- if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
- syslog(LOG_WARNING, "webcit: Can't bind: %s\n", strerror(errno));
- close(s);
- return (-WC_EXIT_BIND);
- }
-
- if (listen(s, actual_queue_len) < 0) {
- syslog(LOG_WARNING, "webcit: Can't listen: %s\n", strerror(errno));
- close(s);
- return (-WC_EXIT_BIND);
- }
-
- chmod(sockpath, 0777);
- return(s);
-}
-
-
-/*
- * Read data from the client socket.
- *
- * sock socket fd to read from
- * buf buffer to read into
- * bytes number of bytes to read
- * timeout Number of seconds to wait before timing out
- *
- * Possible return values:
- * 1 Requested number of bytes has been read.
- * 0 Request timed out.
- * -1 Connection is broken, or other error.
- */
-int client_read_to(ParsedHttpHdrs *Hdr, StrBuf *Target, int bytes, int timeout) {
- const char *Error;
- int retval = 0;
-
-#ifdef HAVE_OPENSSL
- if (is_https) {
- long bufremain = 0;
- long baselen;
-
- baselen = StrLength(Target);
-
- if (Hdr->Pos == NULL) {
- Hdr->Pos = ChrPtr(Hdr->ReadBuf);
- }
-
- if (StrLength(Hdr->ReadBuf) > 0) {
- bufremain = StrLength(Hdr->ReadBuf) - (Hdr->Pos - ChrPtr(Hdr->ReadBuf));
-
- if (bytes < bufremain)
- bufremain = bytes;
- StrBufAppendBufPlain(Target, Hdr->Pos, bufremain, 0);
- StrBufCutLeft(Hdr->ReadBuf, bufremain);
- }
-
- if (bytes > bufremain) {
- while ((StrLength(Hdr->ReadBuf) + StrLength(Target) < bytes + baselen) &&
- (retval >= 0))
- retval = client_read_sslbuffer(Hdr->ReadBuf, timeout);
- if (retval >= 0) {
- StrBufAppendBuf(Target, Hdr->ReadBuf, 0); /* todo: Buf > bytes? */
- return 1;
- }
- else {
- syslog(LOG_INFO, "client_read_ssl() failed\n");
- return -1;
- }
- }
- else
- return 1;
- }
-#endif
- retval = StrBufReadBLOBBuffered(Target,
- Hdr->ReadBuf,
- &Hdr->Pos,
- &Hdr->http_sock,
- 1,
- bytes,
- O_TERM,
- &Error);
- if (retval < 0) {
- syslog(LOG_INFO, "client_read() failed: %s\n", Error);
- wc_backtrace(LOG_DEBUG);
- return retval;
- }
-
- return 1;
-}
-
-
-/*
- * Begin buffering HTTP output so we can transmit it all in one write operation later.
- */
-void begin_burst(void)
-{
- if (WC->WBuf == NULL) {
- WC->WBuf = NewStrBufPlain(NULL, 32768);
- }
-}
-
-
-/*
- * Finish buffering HTTP output. [Compress using zlib and] output with a Content-Length: header.
- */
-long end_burst(void)
-{
- const char *ptr, *eptr;
- long count;
- ssize_t res = 0;
- fd_set wset;
- int fdflags;
-
- if (!DisableGzip && (WC->Hdr->HR.gzip_ok))
- {
- if (CompressBuffer(WC->WBuf) > 0)
- hprintf("Content-encoding: gzip\r\n");
- else {
- syslog(LOG_ALERT, "Compression failed: %d [%s] sending uncompressed\n", errno, strerror(errno));
- wc_backtrace(LOG_INFO);
- }
- }
-
- if (WC->WFBuf != NULL) {
- WildFireSerializePayload(WC->WFBuf, WC->HBuf, &WC->Hdr->nWildfireHeaders, NULL);
- FreeStrBuf(&WC->WFBuf);
- }
-
- if (WC->Hdr->HR.prohibit_caching)
- hprintf("Pragma: no-cache\r\nCache-Control: no-store\r\nExpires:-1\r\n");
- hprintf("Content-length: %d\r\n\r\n", StrLength(WC->WBuf));
-
- ptr = ChrPtr(WC->HBuf);
- count = StrLength(WC->HBuf);
- eptr = ptr + count;
-
-#ifdef HAVE_OPENSSL
- if (is_https) {
- client_write_ssl(WC->HBuf);
- client_write_ssl(WC->WBuf);
- return (count);
- }
-#endif
-
- if (WC->Hdr->http_sock == -1) {
- return -1;
- }
- fdflags = fcntl(WC->Hdr->http_sock, F_GETFL);
-
- while ((ptr < eptr) && (WC->Hdr->http_sock != -1)) {
- if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
- FD_ZERO(&wset);
- FD_SET(WC->Hdr->http_sock, &wset);
- if (select(WC->Hdr->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
- syslog(LOG_DEBUG, "client_write: Socket select failed (%s)\n", strerror(errno));
- return -1;
- }
- }
-
- if ((WC->Hdr->http_sock == -1) ||
- (res = write(WC->Hdr->http_sock,
- ptr,
- count)) == -1) {
- syslog(LOG_DEBUG, "client_write: Socket write failed (%s)\n", strerror(errno));
- wc_backtrace(LOG_INFO);
- return res;
- }
- count -= res;
- ptr += res;
- }
-
- ptr = ChrPtr(WC->WBuf);
- count = StrLength(WC->WBuf);
- eptr = ptr + count;
-
- while ((ptr < eptr) && (WC->Hdr->http_sock != -1)) {
- if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
- FD_ZERO(&wset);
- FD_SET(WC->Hdr->http_sock, &wset);
- if (select(WC->Hdr->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
- syslog(LOG_INFO, "client_write: Socket select failed (%s)\n", strerror(errno));
- return -1;
- }
- }
-
- if ((WC->Hdr->http_sock == -1) ||
- (res = write(WC->Hdr->http_sock,
- ptr,
- count)) == -1) {
- syslog(LOG_INFO, "client_write: Socket write failed (%s)\n", strerror(errno));
- wc_backtrace(LOG_INFO);
- return res;
- }
- count -= res;
- ptr += res;
- }
-
- return StrLength(WC->WBuf);
-}
-
-
-/*
- * lingering_close() a`la Apache. see
- * http://httpd.apache.org/docs/2.0/misc/fin_wait_2.html for rationale
- */
-int lingering_close(int fd)
-{
- char buf[SIZ];
- int i;
- fd_set set;
- struct timeval tv, start;
-
- gettimeofday(&start, NULL);
- if (fd == -1)
- return -1;
- shutdown(fd, 1);
- do {
- do {
- gettimeofday(&tv, NULL);
- tv.tv_sec = SLEEPING - (tv.tv_sec - start.tv_sec);
- tv.tv_usec = start.tv_usec - tv.tv_usec;
- if (tv.tv_usec < 0) {
- tv.tv_sec--;
- tv.tv_usec += 1000000;
- }
- FD_ZERO(&set);
- FD_SET(fd, &set);
- i = select(fd + 1, &set, NULL, NULL, &tv);
- } while (i == -1 && errno == EINTR);
-
- if (i <= 0)
- break;
-
- i = read(fd, buf, sizeof buf);
- } while (i != 0 && (i != -1 || errno == EINTR));
-
- return close(fd);
-}
-
-void
-HttpNewModule_TCPSOCKETS
-(ParsedHttpHdrs *httpreq)
-{
-
- httpreq->ReadBuf = NewStrBufPlain(NULL, SIZ * 4);
-}
-
-void
-HttpDetachModule_TCPSOCKETS
-(ParsedHttpHdrs *httpreq)
-{
-
- FlushStrBuf(httpreq->ReadBuf);
- ReAdjustEmptyBuf(httpreq->ReadBuf, 4 * SIZ, SIZ);
-}
-
-void
-HttpDestroyModule_TCPSOCKETS
-(ParsedHttpHdrs *httpreq)
-{
-
- FreeStrBuf(&httpreq->ReadBuf);
-}
-
-
-void
-SessionNewModule_TCPSOCKETS
-(wcsession *sess)
-{
- sess->CLineBuf = NewStrBuf();
- sess->MigrateReadLineBuf = NewStrBuf();
-}
-
-void
-SessionDestroyModule_TCPSOCKETS
-(wcsession *sess)
-{
- FreeStrBuf(&sess->CLineBuf);
- FreeStrBuf(&sess->ReadBuf);
- sess->connected = 0;
- sess->ReadPos = NULL;
- FreeStrBuf(&sess->MigrateReadLineBuf);
- if (sess->serv_sock > 0) {
- syslog(LOG_DEBUG, "Closing socket %d", sess->serv_sock);
- close(sess->serv_sock);
- }
- sess->serv_sock = -1;
-}
projects / citadel.git / blobdiff