diff options
author | miau <miaukatzemiau@priveasy.de> | 2011-07-11 11:24:52 (GMT) |
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committer | miau <miaukatzemiau@priveasy.de> | 2011-07-11 11:24:52 (GMT) |
commit | 635965049bfd8172adae73557c17cd19f6ea5964 (patch) | |
tree | 699a14c4c1b1897254d6f92d97f663b1d41f8cc9 /listener.c | |
parent | efaa21a4adc37dfa67b70926cc1b9b1d7ecc9768 (diff) |
corrected OpenWRT makefile
builds now when placed in backfire/package
untested if used with feeds
Diffstat (limited to 'listener.c')
-rw-r--r-- | listener.c | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/listener.c b/listener.c deleted file mode 100644 index c0d81ef..0000000 --- a/listener.c +++ /dev/null @@ -1,119 +0,0 @@ -/* -** listener.c -- a datagram sockets "server" demo -*/ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <errno.h> -#include <string.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> - -#include "common.h" - -// get sockaddr, IPv4 or IPv6: -void *get_in_addr(struct sockaddr *sa) -{ - if (sa->sa_family == AF_INET) { - return &(((struct sockaddr_in*)sa)->sin_addr); - } - - return &(((struct sockaddr_in6*)sa)->sin6_addr); -} - -int main(int argc, char *argv[], char *envp[]) -{ - int sockfd; - struct addrinfo hints, *servinfo, *p; - int rv; - int numbytes; - struct sockaddr_storage their_addr; - char buf[MAXBUFLEN]; - socklen_t addr_len; - char s[INET6_ADDRSTRLEN]; - - memset(&hints, 0, sizeof hints); - hints.ai_family = AF_UNSPEC; // set to AF_INET to force IPv4 - hints.ai_socktype = SOCK_DGRAM; - hints.ai_flags = AI_PASSIVE; // use my IP - - if ((rv = getaddrinfo(NULL, SERVERPORT_S, &hints, &servinfo)) != 0) { - fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv)); - return 1; - } - - // loop through all the results and bind to the first we can - for(p = servinfo; p != NULL; p = p->ai_next) { - if ((sockfd = socket(p->ai_family, p->ai_socktype, - p->ai_protocol)) == -1) { - perror("listener: socket"); - continue; - } - - if (bind(sockfd, p->ai_addr, p->ai_addrlen) == -1) { - close(sockfd); - perror("listener: bind"); - continue; - } - - break; - } - - if (p == NULL) { - fprintf(stderr, "listener: failed to bind socket\n"); - return 2; - } - - freeaddrinfo(servinfo); - - // daemonize -#ifndef DEBUG - switch (fork()) { - case 0: - setsid(); - umask(0); - break; - case -1: - perror("fork (serious!)"); - exit(-1); - default: - exit(0); - } -#endif - - // receive loop - addr_len = sizeof their_addr; - while ((numbytes = recvfrom(sockfd, buf, MAXBUFLEN-1 , 0, - (struct sockaddr *)&their_addr, &addr_len)) != -1) { - // decode packet & launch handler - buf[numbytes] = '\0'; - char *task = buf, - *cl_argv[3] = {task, (strlen(task)<numbytes) ? (buf+strlen(task)+1) : NULL, NULL }; - - if (task[0] == '/' || strstr(task, "..")) { - fprintf(stderr, "payload tried directory traversal\n"); - continue; - } - - switch (fork()) { - case 0: - close(sockfd); // close socket handler, leave std io - execve(task, cl_argv, envp); - perror("exec"); - exit(-1); - case -1: - perror("fork (serious!)"); - exit(-1); - default: - wait(); - } - } - - perror("recvfrom"); - - return -1; -} |