| 1 | /* depend: */ |
| 2 | /* cflags: */ |
| 3 | /* linker: color.o debug.o http.o server.o signal.o */ |
| 4 | |
| 5 | #include <assert.h> |
| 6 | #include <stdio.h> |
| 7 | #include <stdlib.h> |
| 8 | #include <unistd.h> |
| 9 | #include <signal.h> |
| 10 | |
| 11 | #include "debug.h" |
| 12 | #include "http.h" |
| 13 | #include "server.h" |
| 14 | #include "signal.h" |
| 15 | |
| 16 | /* types */ |
| 17 | |
| 18 | /* constants */ |
| 19 | |
| 20 | #define BUFFER_SIZE 4096 |
| 21 | |
| 22 | /* macros */ |
| 23 | |
| 24 | /* gobal variables */ |
| 25 | |
| 26 | char *progname = NULL; |
| 27 | int port = 8080; |
| 28 | socket_t sock = INVALID_SOCKET; |
| 29 | socket_t conn = INVALID_SOCKET; |
| 30 | |
| 31 | /* help function */ |
| 32 | |
| 33 | int usage (int ret) |
| 34 | { |
| 35 | FILE *fid = ret ? stderr : stdout; |
| 36 | fprintf (fid, "usage: %s\n", progname); |
| 37 | fprintf (fid, " -h : help message\n"); |
| 38 | fprintf (fid, " -p : port number (%d)\n", port); |
| 39 | fprintf (fid, " -v : verbose level (%d)\n", verbose); |
| 40 | |
| 41 | return ret; |
| 42 | } |
| 43 | |
| 44 | void stop_server (__attribute__((unused)) int sig) |
| 45 | { |
| 46 | if (conn != INVALID_SOCKET) { |
| 47 | close_socket (conn); |
| 48 | } |
| 49 | if (sock != INVALID_SOCKET) { |
| 50 | close_socket (sock); |
| 51 | } |
| 52 | terminate_network_context (); |
| 53 | exit (0); |
| 54 | } |
| 55 | |
| 56 | /* main function */ |
| 57 | |
| 58 | int main (int argc, char *argv[]) |
| 59 | { |
| 60 | int i = 0; |
| 61 | |
| 62 | /* program name */ |
| 63 | |
| 64 | progname = argv[0]; |
| 65 | while (progname[i] != '\0') { |
| 66 | if ((progname[i] == '/') || (progname[i] == '\\')) { |
| 67 | progname += i + 1; |
| 68 | i = 0; |
| 69 | } else { |
| 70 | i++; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | /* argument processing */ |
| 75 | |
| 76 | while (argc-- > 1) { |
| 77 | char *arg = *(++argv); |
| 78 | if (arg[0] != '-') { |
| 79 | VERBOSE (ERROR, PERROR ("%s: invalid option -- '%s'\n", progname, arg); usage (1)); |
| 80 | return 1; |
| 81 | } |
| 82 | char c = arg[1]; |
| 83 | switch (c) { |
| 84 | case 'p': |
| 85 | arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL; |
| 86 | if (arg == NULL) { |
| 87 | VERBOSE (ERROR, PERROR ("%s: missing port number\n", progname); usage (1)); |
| 88 | return 1; |
| 89 | } |
| 90 | port = atoi (arg); |
| 91 | if (port <= 0) { |
| 92 | VERBOSE (ERROR, PERROR ("%s: incorrect port number (%s)\n", progname, arg); usage (1)); |
| 93 | return 1; |
| 94 | } |
| 95 | break; |
| 96 | case 'v': |
| 97 | arg = (arg[2]) ? arg + 2 : (--argc > 0) ? *(++argv) : NULL; |
| 98 | if (arg == NULL) { |
| 99 | VERBOSE (ERROR, PERROR ("%s: missing verbose level\n", progname); usage (1)); |
| 100 | return 1; |
| 101 | } |
| 102 | verbose = atoi (arg); |
| 103 | break; |
| 104 | case 'h': |
| 105 | default: |
| 106 | return usage (c != 'h'); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | VERBOSE (DEBUG, PRINT ("Initializing socket\n")); |
| 111 | init_network_context (); |
| 112 | sock = open_listening_socket (port); |
| 113 | if (sock == INVALID_SOCKET) { |
| 114 | VERBOSE (ERROR, PERROR ("Can't open listening socket\n")); |
| 115 | return 1; |
| 116 | } |
| 117 | VERBOSE (INFO, PRINT ("Listening socket on port %d\n", port)); |
| 118 | |
| 119 | signal (SIGTERM, &stop_server); |
| 120 | |
| 121 | /* main loop */ |
| 122 | while (1) { |
| 123 | conn = accept_incoming_connection (sock); |
| 124 | if (conn == INVALID_SOCKET) { |
| 125 | usleep (1e5); |
| 126 | continue; |
| 127 | } |
| 128 | |
| 129 | VERBOSE (DEBUG, PRINT ("Server connected, waiting for data\n")); |
| 130 | |
| 131 | unsigned char *data = {0}; |
| 132 | |
| 133 | int len = receive_data (conn, &data); |
| 134 | if (len == 0) { |
| 135 | VERBOSE (WARNING, PRINT ("Connection closed by peer (rx)\n")); |
| 136 | } else if (len < 0) { |
| 137 | VERBOSE (WARNING, PRINT ("Connection in error (rx)\n")); |
| 138 | } else { |
| 139 | VERBOSE (DEBUG, PRINT ("Received %d bytes\n", len)); |
| 140 | |
| 141 | // processing |
| 142 | VERBOSE (DEBUG, PRINT ("Processing %s\n", data)); |
| 143 | len = processing (data, len, &data); |
| 144 | |
| 145 | int rc = send_data (conn, data, len); |
| 146 | if (rc == 0) { |
| 147 | VERBOSE (WARNING, PRINT ("Connection closed by peer (tx)\n")); |
| 148 | } else if (rc < 0) { |
| 149 | VERBOSE (WARNING, PRINT ("Connection in error (tx)\n")); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | VERBOSE (DEBUG, PRINT ("Closing connection\n")); |
| 154 | if (data) { |
| 155 | free (data); |
| 156 | } |
| 157 | close_socket (conn); |
| 158 | conn = INVALID_SOCKET; |
| 159 | } |
| 160 | |
| 161 | VERBOSE (DEBUG, PRINT ("Closing socket\n")); |
| 162 | close_socket (sock); |
| 163 | terminate_network_context (); |
| 164 | |
| 165 | return 2; |
| 166 | } |
| 167 | |
| 168 | // test: webserver.exe -h |
| 169 | // test: webserver.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 170 | // test: webserver.exe -_ 2> /dev/null | wc -l | xargs test 0 = |
| 171 | // test: webserver.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 172 | // test: webserver.exe error 2>&1 | grep -q 'invalid option' |
| 173 | // test: webserver.exe -v 2>&1 | grep -q 'missing verbose level' |
| 174 | // test: webserver.exe -p 2>&1 | grep -q 'missing port number' |
| 175 | // test: webserver.exe -p -1 2>&1 | grep -q 'incorrect port number' |
| 176 | // test: webserver.exe > test.log & pid=$!; sleep 1; kill -9 $pid; grep -q 'Listening socket on port 8080' test.log |
| 177 | // test: webserver.exe -p 8000 > test.log & pid=$!; sleep 1; kill -9 $pid; grep -q 'Listening socket on port 8000' test.log |
| 178 | // test: webserver.exe & pid=$!; sleep 1; kill -TERM $pid; ps aux | grep -q [w]ebserver.exe && kill -9 $pid || rc=1; test x$rc = x1 |
| 179 | |
| 180 | /* vim: set ts=4 sw=4 et: */ |