comparison: src/tools/srvctrlsocket.c
src/tools/srvctrlsocket.c
- changeset 179
- ef6827505bd2
- parent 173
- 63b8d52db390
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| 174:8f2a834d1d68 | 179:ef6827505bd2 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2017 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include "srvctrlsocket.h" | |
| 30 | |
| 31 #include <stdio.h> | |
| 32 #include <stdlib.h> | |
| 33 #include <unistd.h> | |
| 34 #include <string.h> | |
| 35 #include <sys/socket.h> | |
| 36 #include <sys/un.h> | |
| 37 | |
| 38 SrvConnection* srvctrl_connet(char *socketfile) { | |
| 39 if(!socketfile) { | |
| 40 fprintf(stderr, "srvctrl_connect: no socketfile\n"); | |
| 41 return NULL; | |
| 42 } | |
| 43 size_t len = strlen(socketfile); | |
| 44 if(len == 0) { | |
| 45 fprintf(stderr, "srvctrl_connect: invalid socket path\n"); | |
| 46 return NULL; | |
| 47 } | |
| 48 if(len > 100) { | |
| 49 fprintf(stderr, "srvctrl_connect: socket path too long\n"); | |
| 50 return NULL; | |
| 51 } | |
| 52 | |
| 53 int fd = socket(AF_UNIX, SOCK_STREAM, 0); | |
| 54 if(fd == -1) { | |
| 55 perror("srvctrl_connect: cannot create socket"); | |
| 56 return NULL; | |
| 57 } | |
| 58 | |
| 59 struct sockaddr_un addr; | |
| 60 memset(&addr, 0, sizeof(addr)); | |
| 61 addr.sun_family = AF_UNIX; | |
| 62 memcpy(addr.sun_path, socketfile, len); | |
| 63 | |
| 64 if(connect(fd, (struct sockaddr*)&addr, sizeof(addr))) { | |
| 65 perror("srvctrl_connect"); | |
| 66 close(fd); | |
| 67 return NULL; | |
| 68 } | |
| 69 | |
| 70 FILE *stream = fdopen(fd, "r+"); | |
| 71 if(!stream) { | |
| 72 close(fd); | |
| 73 return NULL; | |
| 74 } | |
| 75 | |
| 76 SrvConnection *conn = calloc(1, sizeof(SrvConnection)); | |
| 77 conn->socket = fd; | |
| 78 conn->stream = stream; | |
| 79 | |
| 80 return conn; | |
| 81 } | |
| 82 | |
| 83 void srvctrl_close(SrvConnection *conn) { | |
| 84 fclose(conn->stream); | |
| 85 free(conn); | |
| 86 } | |
| 87 | |
| 88 int srvctrl_readmsg(SrvConnection *conn, SrvMsg *msg) { | |
| 89 int type = 0; | |
| 90 uint16_t length; | |
| 91 | |
| 92 type = fgetc(conn->stream); | |
| 93 if(type == EOF) { | |
| 94 return 1; | |
| 95 } | |
| 96 | |
| 97 if(fread(&length, 1, 2, conn->stream) != 2) { | |
| 98 return -1; | |
| 99 } | |
| 100 | |
| 101 msg->type = type; | |
| 102 msg->length = length; | |
| 103 msg->message = malloc(length); | |
| 104 | |
| 105 size_t r = fread(msg->message, 1, length, conn->stream); | |
| 106 if(r != length) { | |
| 107 free(msg->message); | |
| 108 return -1; | |
| 109 } | |
| 110 | |
| 111 return 0; | |
| 112 } |
