/* -*- c-file-style: "linux" -*- Copyright (C) 1992-2001 by Andrew Tridgell <tridge@samba.org> Copyright (C) 2001 by Martin Pool <mbp@samba.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; 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; 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; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*/ /* socket functions used in rsync */ #include "rsync.h" #ifndef HAVE_GETADDRINFO#include "lib/addrinfo.h"#endif extern int af; /* Establish a proxy connection on an open socket to a web roxy by * using the CONNECT method. */static int establish_proxy_connection(int fd, char *host, int port){ char buffer[1024]; char *cp; snprintf(buffer, sizeof(buffer), "CONNECT %s:%d HTTP/1.0\r\n\r\n", host, port); if (write(fd, buffer, strlen(buffer)) != strlen(buffer)) { rprintf(FERROR, "failed to write to proxy: %s\n", strerror(errno)); return -1; } for (cp = buffer; cp < &buffer[sizeof(buffer) - 1]; cp++) { if (read(fd, cp, 1) != 1) { rprintf(FERROR, "failed to read from proxy: %s\n", strerror(errno)); return -1; } if (*cp == '\n') break; } if (*cp != '\n') cp++; *cp-- = '\0'; if (*cp == '\r') *cp = '\0'; if (strncmp(buffer, "HTTP/", 5) != 0) { rprintf(FERROR, "bad response from proxy - %s\n", buffer); return -1; } for (cp = &buffer[5]; isdigit(*cp) || (*cp == '.'); cp++) ; while (*cp == ' ') cp++; if (*cp != '2') { rprintf(FERROR, "bad response from proxy - %s\n", buffer); return -1; } /* throw away the rest of the HTTP header */ while (1) { for (cp = buffer; cp < &buffer[sizeof(buffer) - 1]; cp++) { if (read(fd, cp, 1) != 1) { rprintf(FERROR, "failed to read from proxy: %s\n", strerror(errno)); return -1; } if (*cp == '\n') break; } if ((cp > buffer) && (*cp == '\n')) cp--; if ((cp == buffer) && ((*cp == '\n') || (*cp == '\r'))) break; } return 0;} /** Open a socket to a tcp remote host with the specified port . * * Based on code from Warren. Proxy support by Stephen Rothwell * * * @param bind_address Local address to use. Normally NULL to get the stack default. **/int open_socket_out(char *host, int port, const char *bind_address){ int type = SOCK_STREAM; int error; int s; int result; struct addrinfo hints, *res0, *res; char portbuf[10]; char *h; int proxied = 0; char buffer[1024]; char *cp; /* if we have a RSYNC_PROXY env variable then redirect our * connetcion via a web proxy at the given address. The format * is hostname:port */ h = getenv("RSYNC_PROXY"); proxied = (h != NULL) && (*h != '\0'); if (proxied) { strlcpy(buffer, h, sizeof(buffer)); cp = strchr(buffer, ':'); if (cp == NULL) { rprintf(FERROR, "invalid proxy specification: should be HOST:PORT\n"); return -1; } *cp++ = '\0'; strcpy(portbuf, cp); h = buffer; } else { snprintf(portbuf, sizeof(portbuf), "%d", port); h = host; } memset(&hints, 0, sizeof(hints)); hints.ai_family = af; hints.ai_socktype = type; error = getaddrinfo(h, portbuf, &hints, &res0); if (error) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: %s: %s\n", portbuf, gai_strerror(error)); return -1; } s = -1; for (res = res0; res; res = res->ai_next) { s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if (s < 0) continue; if (bind_address) { struct addrinfo bhints, *bres; memset(&bhints, 0, sizeof(bhints)); bhints.ai_family = res->ai_family; bhints.ai_socktype = type; bhints.ai_flags = AI_PASSIVE; error = getaddrinfo(bind_address, NULL, &bhints, &bres); if (error) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s: %s\n", bind_address, gai_strerror(error)); continue; } if (bres->ai_next) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s resolved to multiple hosts\n", bind_address); freeaddrinfo(bres); continue; } bind(s, bres->ai_addr, bres->ai_addrlen); } if (connect(s, res->ai_addr, res->ai_addrlen) < 0) { close(s); s = -1; continue; } if (proxied && establish_proxy_connection(s, host, port) != 0) { close(s); s = -1; continue; } else break; } freeaddrinfo(res0); if (s < 0) { rprintf(FERROR, RSYNC_NAME ": failed to connect to %s: %s\n", h, strerror(errno)); return -1; } return s;} /** * Open an outgoing socket, but allow for it to be intercepted by * $RSYNC_CONNECT_PROG, which will execute a program across a TCP * socketpair rather than really opening a socket. * * We use this primarily in testing to detect TCP flow bugs, but not * cause security problems by really opening remote connections. * * This is based on the Samba LIBSMB_PROG feature. * * @param bind_address Local address to use. Normally NULL to get the stack default. **/int open_socket_out_wrapped (char *host, int port, const char *bind_address){ char *prog; if ((prog = getenv ("RSYNC_CONNECT_PROG")) != NULL) return sock_exec (prog); else return open_socket_out (host, port, bind_address);} /** * Open a socket of the specified type, port and address for incoming data * * @param bind_address Local address to bind, or NULL to allow it to * default. **/static int open_socket_in(int type, int port, const char *bind_address){ int one=1; int s; struct addrinfo hints, *res; char portbuf[10]; int error; memset(&hints, 0, sizeof(hints)); hints.ai_family = af; hints.ai_socktype = type; hints.ai_flags = AI_PASSIVE; snprintf(portbuf, sizeof(portbuf), "%d", port); error = getaddrinfo(bind_address, portbuf, &hints, &res); if (error) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s: %s\n", bind_address, gai_strerror(error)); return -1; } if (res->ai_next) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s: " "resolved to multiple hosts\n", bind_address); freeaddrinfo(res); return -1; } s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if (s < 0) { rprintf(FERROR, RSYNC_NAME ": open socket in failed: %s\n", strerror(errno)); freeaddrinfo(res); return -1; } setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&one,sizeof(one)); /* now we've got a socket - we need to bind it */ if (bind(s, res->ai_addr, res->ai_addrlen) < 0) { rprintf(FERROR, RSYNC_NAME ": bind failed on port %d\n", port); freeaddrinfo(res); close(s); return -1; } return s;} /* * Determine if a file descriptor is in fact a socket */int is_a_socket(int fd){ int v; socklen_t l; l = sizeof(int); /* Parameters to getsockopt, setsockopt etc are very * unstandardized across platforms, so don't be surprised if * there are compiler warnings on e.g. SCO OpenSwerver or AIX. * It seems they all eventually get the right idea. * * Debian says: ``The fifth argument of getsockopt and * setsockopt is in reality an int [*] (and this is what BSD * 4.* and libc4 and libc5 have). Some POSIX confusion * resulted in the present socklen_t. The draft standard has * not been adopted yet, but glibc2 already follows it and * also has socklen_t [*]. See also accept(2).'' * * We now return to your regularly scheduled programming. */ return(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&v, &l) == 0);} void start_accept_loop(int port, int (*fn)(int )){ int s; extern char *bind_address; /* open an incoming socket */ s = open_socket_in(SOCK_STREAM, port, bind_address); if (s == -1) exit_cleanup(RERR_SOCKETIO); /* ready to listen */ if (listen(s, 5) == -1) { close(s); exit_cleanup(RERR_SOCKETIO); } /* now accept incoming connections - forking a new process for each incoming connection */ while (1) { fd_set fds; int fd; struct sockaddr_storage addr; int in_addrlen = sizeof(addr); /* close log file before the potentially very long select so file can be trimmed by another process instead of growing forever */ log_close(); FD_ZERO(&fds); FD_SET(s, &fds); if (select(s+1, &fds, NULL, NULL, NULL) != 1) { continue; } if(!FD_ISSET(s, &fds)) continue; fd = accept(s,(struct sockaddr *)&addr,&in_addrlen); if (fd == -1) continue; signal(SIGCHLD, SIG_IGN); /* we shouldn't have any children left hanging around but I have had reports that on Digital Unix zombies are produced, so this ensures that they are reaped */#ifdef WNOHANG while (waitpid(-1, NULL, WNOHANG) > 0);#endif if (fork()==0) { close(s); /* open log file in child before possibly giving up privileges */ log_open(); _exit(fn(fd)); } close(fd); }} enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON}; struct{ char *name; int level; int option; int value; int opttype;} socket_options[] = { {"SO_KEEPALIVE", SOL_SOCKET, SO_KEEPALIVE, 0, OPT_BOOL}, {"SO_REUSEADDR", SOL_SOCKET, SO_REUSEADDR, 0, OPT_BOOL}, {"SO_BROADCAST", SOL_SOCKET, SO_BROADCAST, 0, OPT_BOOL},#ifdef TCP_NODELAY {"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL},#endif#ifdef IPTOS_LOWDELAY {"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON},#endif#ifdef IPTOS_THROUGHPUT {"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON},#endif#ifdef SO_SNDBUF {"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT},#endif#ifdef SO_RCVBUF {"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT},#endif#ifdef SO_SNDLOWAT {"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT},#endif#ifdef SO_RCVLOWAT {"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},#endif#ifdef SO_SNDTIMEO {"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},#endif#ifdef SO_RCVTIMEO {"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},#endif {NULL,0,0,0,0}}; /****************************************************************************set user socket options****************************************************************************/void set_socket_options(int fd, char *options){ char *tok; if (!options || !*options) return; options = strdup(options); if (!options) out_of_memory("set_socket_options"); for (tok=strtok(options, " \t,"); tok; tok=strtok(NULL," \t,")) { int ret=0,i; int value = 1; char *p; int got_value = 0; if ((p = strchr(tok,'='))) { *p = 0; value = atoi(p+1); got_value = 1; } for (i=0;socket_options[i].name;i++) if (strcmp(socket_options[i].name,tok)==0) break; if (!socket_options[i].name) { rprintf(FERROR,"Unknown socket option %s\n",tok); continue; } switch (socket_options[i].opttype) { case OPT_BOOL: case OPT_INT: ret = setsockopt(fd,socket_options[i].level, socket_options[i].option,(char *)&value,sizeof(int)); break; case OPT_ON: if (got_value) rprintf(FERROR,"syntax error - %s does not take a value\n",tok); { int on = socket_options[i].value; ret = setsockopt(fd,socket_options[i].level, socket_options[i].option,(char *)&on,sizeof(int)); } break; } if (ret != 0) rprintf(FERROR, "failed to set socket option %s: %s\n", tok, strerror(errno)); } free(options);} /****************************************************************************become a daemon, discarding the controlling terminal****************************************************************************/void become_daemon(void){ int i; if (fork()) { _exit(0); } /* detach from the terminal */#ifdef HAVE_SETSID setsid();#else#ifdef TIOCNOTTY i = open("/dev/tty", O_RDWR); if (i >= 0) { ioctl(i, (int) TIOCNOTTY, (char *)0); close(i); }#endif /* TIOCNOTTY */#endif /* make sure that stdin, stdout an stderr don't stuff thingsLines 1–500 of 783. 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/* -*- c-file-style: "linux" -*- Copyright (C) 1992-2001 by Andrew Tridgell <tridge@samba.org> Copyright (C) 2001 by Martin Pool <mbp@samba.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; 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; 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; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* socket functions used in rsync */ #include "rsync.h" #ifndef HAVE_GETADDRINFO #include "lib/addrinfo.h" #endif extern int af; /* Establish a proxy connection on an open socket to a web roxy by * using the CONNECT method. */ static int establish_proxy_connection(int fd, char *host, int port) { char buffer[1024]; char *cp; snprintf(buffer, sizeof(buffer), "CONNECT %s:%d HTTP/1.0\r\n\r\n", host, port); if (write(fd, buffer, strlen(buffer)) != strlen(buffer)) { rprintf(FERROR, "failed to write to proxy: %s\n", strerror(errno)); return -1; } for (cp = buffer; cp < &buffer[sizeof(buffer) - 1]; cp++) { if (read(fd, cp, 1) != 1) { rprintf(FERROR, "failed to read from proxy: %s\n", strerror(errno)); return -1; } if (*cp == '\n') break; } if (*cp != '\n') cp++; *cp-- = '\0'; if (*cp == '\r') *cp = '\0'; if (strncmp(buffer, "HTTP/", 5) != 0) { rprintf(FERROR, "bad response from proxy - %s\n", buffer); return -1; } for (cp = &buffer[5]; isdigit(*cp) || (*cp == '.'); cp++) ; while (*cp == ' ') cp++; if (*cp != '2') { rprintf(FERROR, "bad response from proxy - %s\n", buffer); return -1; } /* throw away the rest of the HTTP header */ while (1) { for (cp = buffer; cp < &buffer[sizeof(buffer) - 1]; cp++) { if (read(fd, cp, 1) != 1) { rprintf(FERROR, "failed to read from proxy: %s\n", strerror(errno)); return -1; } if (*cp == '\n') break; } if ((cp > buffer) && (*cp == '\n')) cp--; if ((cp == buffer) && ((*cp == '\n') || (*cp == '\r'))) break; } return 0; } /** Open a socket to a tcp remote host with the specified port . * * Based on code from Warren. Proxy support by Stephen Rothwell * * * @param bind_address Local address to use. Normally NULL to get the stack default. **/ int open_socket_out(char *host, int port, const char *bind_address) { int type = SOCK_STREAM; int error; int s; int result; struct addrinfo hints, *res0, *res; char portbuf[10]; char *h; int proxied = 0; char buffer[1024]; char *cp; /* if we have a RSYNC_PROXY env variable then redirect our * connetcion via a web proxy at the given address. The format * is hostname:port */ h = getenv("RSYNC_PROXY"); proxied = (h != NULL) && (*h != '\0'); if (proxied) { strlcpy(buffer, h, sizeof(buffer)); cp = strchr(buffer, ':'); if (cp == NULL) { rprintf(FERROR, "invalid proxy specification: should be HOST:PORT\n"); return -1; } *cp++ = '\0'; strcpy(portbuf, cp); h = buffer; } else { snprintf(portbuf, sizeof(portbuf), "%d", port); h = host; } memset(&hints, 0, sizeof(hints)); hints.ai_family = af; hints.ai_socktype = type; error = getaddrinfo(h, portbuf, &hints, &res0); if (error) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: %s: %s\n", portbuf, gai_strerror(error)); return -1; } s = -1; for (res = res0; res; res = res->ai_next) { s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if (s < 0) continue; if (bind_address) { struct addrinfo bhints, *bres; memset(&bhints, 0, sizeof(bhints)); bhints.ai_family = res->ai_family; bhints.ai_socktype = type; bhints.ai_flags = AI_PASSIVE; error = getaddrinfo(bind_address, NULL, &bhints, &bres); if (error) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s: %s\n", bind_address, gai_strerror(error)); continue; } if (bres->ai_next) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s resolved to multiple hosts\n", bind_address); freeaddrinfo(bres); continue; } bind(s, bres->ai_addr, bres->ai_addrlen); } if (connect(s, res->ai_addr, res->ai_addrlen) < 0) { close(s); s = -1; continue; } if (proxied && establish_proxy_connection(s, host, port) != 0) { close(s); s = -1; continue; } else break; } freeaddrinfo(res0); if (s < 0) { rprintf(FERROR, RSYNC_NAME ": failed to connect to %s: %s\n", h, strerror(errno)); return -1; } return s; } /** * Open an outgoing socket, but allow for it to be intercepted by * $RSYNC_CONNECT_PROG, which will execute a program across a TCP * socketpair rather than really opening a socket. * * We use this primarily in testing to detect TCP flow bugs, but not * cause security problems by really opening remote connections. * * This is based on the Samba LIBSMB_PROG feature. * * @param bind_address Local address to use. Normally NULL to get the stack default. **/ int open_socket_out_wrapped (char *host, int port, const char *bind_address) { char *prog; if ((prog = getenv ("RSYNC_CONNECT_PROG")) != NULL) return sock_exec (prog); else return open_socket_out (host, port, bind_address); } /** * Open a socket of the specified type, port and address for incoming data * * @param bind_address Local address to bind, or NULL to allow it to * default. **/ static int open_socket_in(int type, int port, const char *bind_address) { int one=1; int s; struct addrinfo hints, *res; char portbuf[10]; int error; memset(&hints, 0, sizeof(hints)); hints.ai_family = af; hints.ai_socktype = type; hints.ai_flags = AI_PASSIVE; snprintf(portbuf, sizeof(portbuf), "%d", port); error = getaddrinfo(bind_address, portbuf, &hints, &res); if (error) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s: %s\n", bind_address, gai_strerror(error)); return -1; } if (res->ai_next) { rprintf(FERROR, RSYNC_NAME ": getaddrinfo: bind address %s: " "resolved to multiple hosts\n", bind_address); freeaddrinfo(res); return -1; } s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); if (s < 0) { rprintf(FERROR, RSYNC_NAME ": open socket in failed: %s\n", strerror(errno)); freeaddrinfo(res); return -1; } setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&one,sizeof(one)); /* now we've got a socket - we need to bind it */ if (bind(s, res->ai_addr, res->ai_addrlen) < 0) { rprintf(FERROR, RSYNC_NAME ": bind failed on port %d\n", port); freeaddrinfo(res); close(s); return -1; } return s; } /* * Determine if a file descriptor is in fact a socket */ int is_a_socket(int fd) { int v; socklen_t l; l = sizeof(int); /* Parameters to getsockopt, setsockopt etc are very * unstandardized across platforms, so don't be surprised if * there are compiler warnings on e.g. SCO OpenSwerver or AIX. * It seems they all eventually get the right idea. * * Debian says: ``The fifth argument of getsockopt and * setsockopt is in reality an int [*] (and this is what BSD * 4.* and libc4 and libc5 have). Some POSIX confusion * resulted in the present socklen_t. The draft standard has * not been adopted yet, but glibc2 already follows it and * also has socklen_t [*]. See also accept(2).'' * * We now return to your regularly scheduled programming. */ return(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&v, &l) == 0); } void start_accept_loop(int port, int (*fn)(int )) { int s; extern char *bind_address; /* open an incoming socket */ s = open_socket_in(SOCK_STREAM, port, bind_address); if (s == -1) exit_cleanup(RERR_SOCKETIO); /* ready to listen */ if (listen(s, 5) == -1) { close(s); exit_cleanup(RERR_SOCKETIO); } /* now accept incoming connections - forking a new process for each incoming connection */ while (1) { fd_set fds; int fd; struct sockaddr_storage addr; int in_addrlen = sizeof(addr); /* close log file before the potentially very long select so file can be trimmed by another process instead of growing forever */ log_close(); FD_ZERO(&fds); FD_SET(s, &fds); if (select(s+1, &fds, NULL, NULL, NULL) != 1) { continue; } if(!FD_ISSET(s, &fds)) continue; fd = accept(s,(struct sockaddr *)&addr,&in_addrlen); if (fd == -1) continue; signal(SIGCHLD, SIG_IGN); /* we shouldn't have any children left hanging around but I have had reports that on Digital Unix zombies are produced, so this ensures that they are reaped */ #ifdef WNOHANG while (waitpid(-1, NULL, WNOHANG) > 0); #endif if (fork()==0) { close(s); /* open log file in child before possibly giving up privileges */ log_open(); _exit(fn(fd)); } close(fd); } } enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON}; struct { char *name; int level; int option; int value; int opttype; } socket_options[] = { {"SO_KEEPALIVE", SOL_SOCKET, SO_KEEPALIVE, 0, OPT_BOOL}, {"SO_REUSEADDR", SOL_SOCKET, SO_REUSEADDR, 0, OPT_BOOL}, {"SO_BROADCAST", SOL_SOCKET, SO_BROADCAST, 0, OPT_BOOL}, #ifdef TCP_NODELAY {"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL}, #endif #ifdef IPTOS_LOWDELAY {"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON}, #endif #ifdef IPTOS_THROUGHPUT {"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON}, #endif #ifdef SO_SNDBUF {"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT}, #endif #ifdef SO_RCVBUF {"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT}, #endif #ifdef SO_SNDLOWAT {"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT}, #endif #ifdef SO_RCVLOWAT {"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT}, #endif #ifdef SO_SNDTIMEO {"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT}, #endif #ifdef SO_RCVTIMEO {"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT}, #endif {NULL,0,0,0,0}}; /**************************************************************************** set user socket options ****************************************************************************/ void set_socket_options(int fd, char *options) { char *tok; if (!options || !*options) return; options = strdup(options); if (!options) out_of_memory("set_socket_options"); for (tok=strtok(options, " \t,"); tok; tok=strtok(NULL," \t,")) { int ret=0,i; int value = 1; char *p; int got_value = 0; if ((p = strchr(tok,'='))) { *p = 0; value = atoi(p+1); got_value = 1; } for (i=0;socket_options[i].name;i++) if (strcmp(socket_options[i].name,tok)==0) break; if (!socket_options[i].name) { rprintf(FERROR,"Unknown socket option %s\n",tok); continue; } switch (socket_options[i].opttype) { case OPT_BOOL: case OPT_INT: ret = setsockopt(fd,socket_options[i].level, socket_options[i].option,(char *)&value,sizeof(int)); break; case OPT_ON: if (got_value) rprintf(FERROR,"syntax error - %s does not take a value\n",tok); { int on = socket_options[i].value; ret = setsockopt(fd,socket_options[i].level, socket_options[i].option,(char *)&on,sizeof(int)); } break; } if (ret != 0) rprintf(FERROR, "failed to set socket option %s: %s\n", tok, strerror(errno)); } free(options); } /**************************************************************************** become a daemon, discarding the controlling terminal ****************************************************************************/ void become_daemon(void) { int i; if (fork()) { _exit(0); } /* detach from the terminal */ #ifdef HAVE_SETSID setsid(); #else #ifdef TIOCNOTTY i = open("/dev/tty", O_RDWR); if (i >= 0) { ioctl(i, (int) TIOCNOTTY, (char *)0); close(i); } #endif /* TIOCNOTTY */ #endif /* make sure that stdin, stdout an stderr don't stuff things