NEWS update.
[paraslash.git] / recv_common.c
1 /*
2 * Copyright (C) 2006-2008 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file recv_common.c common functions of para_recv and para_audiod */
8
9 #include "para.h"
10
11 #include "list.h"
12 #include "sched.h"
13 #include "recv.h"
14 #include "string.h"
15
16 DEFINE_RECEIVER_ARRAY;
17 static void *parse_receiver_args(int receiver_num, char *options)
18 {
19 struct receiver *r = &receivers[receiver_num];
20 char **argv;
21 int argc, i;
22 void *conf;
23
24
25 // PARA_DEBUG_LOG("%s, options: %s\n", r->name,
26 // options? options : "(none)");
27 if (options) {
28 PARA_DEBUG_LOG("options: %s\n", options);
29 argc = split_args(options, &argv, " \t");
30 for (i = argc - 1; i >= 0; i--)
31 argv[i + 1] = argv[i];
32 argv[0] = para_strdup(r->name);
33 argc += 1;
34 PARA_DEBUG_LOG("argc = %d, argv[0]: %s\n", argc, argv[0]);
35 } else {
36 argc = 1;
37 argv = para_malloc(2 * sizeof(char*));
38 argv[0] = NULL;
39 argv[1] = NULL;
40 }
41 conf = r->parse_config(argc, argv);
42 free(argv[0]);
43 free(argv);
44 return conf;
45 }
46
47 /**
48 * check if given string is a valid command line for any receiver
49 *
50 * \param \ra string of the form receiver_name:options
51 * \param receiver_num contains the number of the receiver upon success
52 *
53 * This function checks whether \a ra starts with the name of a supported
54 * paraslash receiver, optinally followed by a colon and any options for that
55 * receiver. If a valid receiver name was found and further are present, the
56 * remaining part of \a ra is passed to that receiver's config parser.
57 *
58 * \return On success, a pointer to the gengetopt args info struct is returned
59 * and \a receiver_num contains the number of the receiver. Otherwise this function
60 * returns \p NULL.
61 */
62 void *check_receiver_arg(char *ra, int *receiver_num)
63 {
64 int j;
65
66 PARA_DEBUG_LOG("checking %s\n", ra);
67 for (j = 0; receivers[j].name; j++) {
68 const char *name = receivers[j].name;
69 size_t len = strlen(name);
70 char c;
71 if (strlen(ra) < len)
72 continue;
73 if (strncmp(name, ra, len))
74 continue;
75 c = ra[len];
76 if (c && c != ' ')
77 continue;
78 if (c && !receivers[j].parse_config)
79 return NULL;
80 *receiver_num = j;
81 return parse_receiver_args(j, c? ra + len + 1: NULL);
82 }
83 PARA_ERROR_LOG("receiver not found\n");
84 return NULL;
85 }