| 1 | #ifdef HAVE_CONFIG_H |
| 2 | #include <config.h> |
| 3 | #endif |
| 4 | #include <string.h> |
| 5 | #include <unistd.h> |
| 6 | #include <stdlib.h> |
| 7 | #include <stdio.h> |
| 8 | #include <errno.h> |
| 9 | #include <signal.h> |
| 10 | #include <fcntl.h> |
| 11 | #include <panel-applet.h> |
| 12 | #include <doldaconnect/utils.h> |
| 13 | |
| 14 | #include "conduit.h" |
| 15 | |
| 16 | #define SUBPROCCMD "ksu fredrik -q -e /home/fredrik/bin/dctrmon" |
| 17 | |
| 18 | struct data |
| 19 | { |
| 20 | pid_t subproc; |
| 21 | int fd; |
| 22 | int gdktag; |
| 23 | char *inbuf; |
| 24 | size_t inbufsize, inbufdata; |
| 25 | }; |
| 26 | |
| 27 | static void pipefdcb(struct conduit *conduit, int fd, GdkInputCondition condition) |
| 28 | { |
| 29 | struct data *data; |
| 30 | int ret; |
| 31 | char *p, *p2, *cmd; |
| 32 | char **args; |
| 33 | size_t argssize, argsdata; |
| 34 | struct transfer *transfer; |
| 35 | |
| 36 | data = (struct data *)conduit->cdata; |
| 37 | if(conduit->state == CNDS_SYN) |
| 38 | condconnected(conduit); |
| 39 | sizebuf2(data->inbuf, data->inbufdata + 80, 1); |
| 40 | ret = read(data->fd, data->inbuf + data->inbufdata, data->inbufsize - data->inbufdata); |
| 41 | if(ret < 0) |
| 42 | { |
| 43 | if((errno == EINTR) || (errno == EAGAIN)) /* Shouldn't happen, but, oh well... */ |
| 44 | return; |
| 45 | perror("conduit-pipe: read"); |
| 46 | gdk_input_remove(data->gdktag); |
| 47 | close(data->fd); |
| 48 | kill(-data->subproc, SIGHUP); |
| 49 | data->gdktag = -1; |
| 50 | data->fd = -1; |
| 51 | data->subproc = 0; |
| 52 | conddisconn(conduit); |
| 53 | } |
| 54 | if(ret == 0) |
| 55 | { |
| 56 | gdk_input_remove(data->gdktag); |
| 57 | close(data->fd); |
| 58 | kill(-data->subproc, SIGHUP); |
| 59 | data->gdktag = -1; |
| 60 | data->fd = -1; |
| 61 | data->subproc = 0; |
| 62 | conddisconn(conduit); |
| 63 | } |
| 64 | data->inbufdata += ret; |
| 65 | while((p = memchr(data->inbuf, '\n', data->inbufdata)) != NULL) |
| 66 | { |
| 67 | *p = 0; |
| 68 | cmd = sstrdup(data->inbuf); |
| 69 | memmove(data->inbuf, p + 1, data->inbufdata -= (p - data->inbuf) + 1); |
| 70 | args = NULL; |
| 71 | argssize = argsdata = 0; |
| 72 | p = cmd; |
| 73 | do |
| 74 | { |
| 75 | if((p2 = strchr(p, '\t')) != NULL) |
| 76 | *(p2++) = 0; |
| 77 | addtobuf(args, p); |
| 78 | p = p2; |
| 79 | } while(p2 != NULL); |
| 80 | if(!strcmp(args[0], "N") && (argsdata >= 4)) |
| 81 | { |
| 82 | transfer = newtransfer(conduit, args[1], atoi(args[2]), atoi(args[3])); |
| 83 | } |
| 84 | if(!strcmp(args[0], "D") && (argsdata >= 2)) |
| 85 | { |
| 86 | if((transfer = findtransferbytag(conduit, args[1])) != NULL) |
| 87 | freetransfer(transfer); |
| 88 | } |
| 89 | if(!strcmp(args[0], "S") && (argsdata >= 3)) |
| 90 | { |
| 91 | if((transfer = findtransferbytag(conduit, args[1])) != NULL) |
| 92 | transfersetsize(transfer, atoi(args[2])); |
| 93 | } |
| 94 | if(!strcmp(args[0], "P") && (argsdata >= 3)) |
| 95 | { |
| 96 | if((transfer = findtransferbytag(conduit, args[1])) != NULL) |
| 97 | transfersetpos(transfer, atoi(args[2])); |
| 98 | } |
| 99 | free(args); |
| 100 | free(cmd); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | static int init(struct conduit *conduit) |
| 105 | { |
| 106 | static int inited = 0; |
| 107 | struct data *data; |
| 108 | |
| 109 | if(!inited) |
| 110 | { |
| 111 | signal(SIGCHLD, SIG_IGN); |
| 112 | inited = 1; |
| 113 | } |
| 114 | data = smalloc(sizeof(*data)); |
| 115 | memset(data, 0, sizeof(*data)); |
| 116 | data->fd = -1; |
| 117 | data->inbuf = NULL; |
| 118 | data->inbufsize = data->inbufdata = 0; |
| 119 | data->gdktag = -1; |
| 120 | conduit->cdata = data; |
| 121 | return(0); |
| 122 | } |
| 123 | |
| 124 | static int connect(struct conduit *conduit) |
| 125 | { |
| 126 | struct data *data; |
| 127 | pid_t pid; |
| 128 | int pfd[2]; |
| 129 | |
| 130 | data = conduit->cdata; |
| 131 | if(pipe(pfd)) |
| 132 | return(-1); |
| 133 | if((pid = fork()) < 0) |
| 134 | { |
| 135 | close(pfd[0]); |
| 136 | close(pfd[1]); |
| 137 | return(-1); |
| 138 | } |
| 139 | if(!pid) |
| 140 | { |
| 141 | int devnull; |
| 142 | |
| 143 | setpgrp(); |
| 144 | if((devnull = open("/dev/null", O_RDWR)) < 0) |
| 145 | exit(127); |
| 146 | close(pfd[0]); |
| 147 | dup2(pfd[1], 1); |
| 148 | close(pfd[1]); |
| 149 | dup2(devnull, 0); |
| 150 | close(devnull); |
| 151 | /* Leave stderr as is */ |
| 152 | execl("/bin/sh", "sh", "-c", SUBPROCCMD, NULL); |
| 153 | exit(127); |
| 154 | } |
| 155 | close(pfd[1]); |
| 156 | fcntl(pfd[0], F_SETFL, fcntl(pfd[0], F_GETFL) | O_NONBLOCK); |
| 157 | data->subproc = pid; |
| 158 | data->fd = pfd[0]; |
| 159 | data->gdktag = gdk_input_add(pfd[0], GDK_INPUT_READ, (void (*)(gpointer, gint, GdkInputCondition))pipefdcb, conduit); |
| 160 | data->inbufdata = 0; |
| 161 | return(0); |
| 162 | } |
| 163 | |
| 164 | static void destroy(struct conduit *conduit) |
| 165 | { |
| 166 | struct data *data; |
| 167 | |
| 168 | data = conduit->cdata; |
| 169 | if(data == NULL) |
| 170 | return; |
| 171 | if(data->gdktag >= 0) |
| 172 | gdk_input_remove(data->gdktag); |
| 173 | if(data->subproc > 0) |
| 174 | kill(-data->subproc, SIGHUP); |
| 175 | if(data->fd >= 0) |
| 176 | close(data->fd); |
| 177 | if(data->inbuf != NULL) |
| 178 | free(data->inbuf); |
| 179 | free(data); |
| 180 | conduit->cdata = NULL; |
| 181 | } |
| 182 | |
| 183 | static struct conduitiface st_conduit_pipe = |
| 184 | { |
| 185 | .init = init, |
| 186 | .connect = connect, |
| 187 | .destroy = destroy, |
| 188 | }; |
| 189 | |
| 190 | struct conduitiface *conduit_pipe = &st_conduit_pipe; |