audiod: Fix time diff log message.
[paraslash.git] / recv_common.c
1 /*
2 * Copyright (C) 2006-2009 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 <regex.h>
10 #include <stdbool.h>
11
12 #include "para.h"
13 #include "list.h"
14 #include "sched.h"
15 #include "ggo.h"
16 #include "recv.h"
17 #include "string.h"
18 #include "buffer_tree.h"
19
20 DEFINE_RECEIVER_ARRAY;
21
22 /**
23 * Call the init function of each paraslash receiver.
24 */
25 void recv_init(void)
26 {
27 int i;
28
29 FOR_EACH_RECEIVER(i)
30 receivers[i].init(&receivers[i]);
31 }
32
33 static void *parse_receiver_args(int receiver_num, char *options)
34 {
35 struct receiver *r = &receivers[receiver_num];
36 char **argv;
37 int argc, i;
38 void *conf;
39
40
41 PARA_DEBUG_LOG("%s, options: %s\n", r->name,
42 options? options : "(none)");
43 if (options) {
44 PARA_DEBUG_LOG("options: %s\n", options);
45 argc = create_argv(options, " \t", &argv);
46 if (argc < 0)
47 return NULL;
48 for (i = argc - 1; i >= 0; i--)
49 argv[i + 1] = argv[i];
50 argv[0] = NULL;
51 argc++;
52 } else {
53 argc = 1;
54 argv = para_malloc(2 * sizeof(char*));
55 argv[0] = NULL;
56 argv[1] = NULL;
57 }
58 conf = r->parse_config(argc, argv);
59 for (i = 1; i < argc; i++)
60 free(argv[i]);
61 free(argv);
62 return conf;
63 }
64
65 /**
66 * check if given string is a valid command line for any receiver
67 *
68 * \param \ra string of the form receiver_name:options
69 * \param receiver_num contains the number of the receiver upon success
70 *
71 * This function checks whether \a ra starts with the name of a supported
72 * paraslash receiver, optinally followed by a colon and any options for that
73 * receiver. If a valid receiver name was found and further are present, the
74 * remaining part of \a ra is passed to that receiver's config parser.
75 *
76 * \return On success, a pointer to the gengetopt args info struct is returned
77 * and \a receiver_num contains the number of the receiver. Otherwise this function
78 * returns \p NULL.
79 */
80 void *check_receiver_arg(char *ra, int *receiver_num)
81 {
82 int j;
83
84 PARA_DEBUG_LOG("checking %s\n", ra);
85 for (j = 0; receivers[j].name; j++) {
86 const char *name = receivers[j].name;
87 size_t len = strlen(name);
88 char c;
89 if (strlen(ra) < len)
90 continue;
91 if (strncmp(name, ra, len))
92 continue;
93 c = ra[len];
94 if (c && c != ' ')
95 continue;
96 if (c && !receivers[j].parse_config)
97 return NULL;
98 *receiver_num = j;
99 return parse_receiver_args(j, c? ra + len + 1: NULL);
100 }
101 PARA_ERROR_LOG("receiver not found\n");
102 return NULL;
103 }
104
105 /**
106 * Print out the help texts to all receivers.
107 *
108 * \param detailed Whether the detailed help should be printed.
109 */
110 void print_receiver_helps(int detailed)
111 {
112 int i;
113
114 printf_or_die("\nAvailable receivers: \n\t");
115 FOR_EACH_RECEIVER(i)
116 printf_or_die("%s%s", i? " " : "", receivers[i].name);
117 printf_or_die("\n\n");
118 FOR_EACH_RECEIVER(i) {
119 struct receiver *r = receivers + i;
120 if (!r->help.short_help)
121 continue;
122 printf_or_die("Options for %s:\n", r->name);
123 ggo_print_help(&r->help, detailed);
124 }
125 }
126
127 int generic_recv_pre_select(struct sched *s, struct task *t)
128 {
129 struct receiver_node *rn = container_of(t, struct receiver_node, task);
130 int ret = btr_node_status(rn->btrn, 0, BTR_NT_ROOT);
131
132 t->error = 0;
133 if (ret < 0) {
134 s->timeout.tv_sec = 0;
135 s->timeout.tv_usec = 1;
136 }
137 return ret;
138 }