1 /* //device/system/rild/rild.c
2 **
3 ** Copyright 2006 The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 #include <stdio.h>
19 #include <stdlib.h>
20 #include <dlfcn.h>
21 #include <string.h>
22 #include <stdint.h>
23 #include <unistd.h>
24 #include <fcntl.h>
25 #include <errno.h>
26
27 #include <guest/hals/ril/libril/ril.h>
28
29 #define LOG_TAG "RILD"
30 #include <log/log.h>
31 #include <cutils/properties.h>
32 #include <cutils/sockets.h>
33 #include <sys/capability.h>
34 #include <sys/prctl.h>
35 #include <sys/stat.h>
36 #include <sys/types.h>
37 #include <guest/hals/ril/libril/ril_ex.h>
38
39 #define LIB_PATH_PROPERTY "vendor.rild.libpath"
40 #define LIB_ARGS_PROPERTY "vendor.rild.libargs"
41 #define MAX_LIB_ARGS 16
42
usage(const char * argv0)43 static void usage(const char *argv0) {
44 fprintf(stderr, "Usage: %s -l <ril impl library> [-- <args for impl library>]\n", argv0);
45 exit(EXIT_FAILURE);
46 }
47
48 extern char ril_service_name_base[MAX_SERVICE_NAME_LENGTH];
49 extern char ril_service_name[MAX_SERVICE_NAME_LENGTH];
50
51 extern void RIL_register (const RIL_RadioFunctions *callbacks);
52 extern void rilc_thread_pool ();
53
54 extern void RIL_register_socket (const RIL_RadioFunctions *(*rilUimInit)
55 (const struct RIL_Env *, int, char **), RIL_SOCKET_TYPE socketType, int argc, char **argv);
56
57 extern void RIL_onRequestComplete(RIL_Token t, RIL_Errno e,
58 void *response, size_t responselen);
59
60 extern void RIL_onRequestAck(RIL_Token t);
61
62 #if defined(ANDROID_MULTI_SIM)
63 extern void RIL_onUnsolicitedResponse(int unsolResponse, const void *data,
64 size_t datalen, RIL_SOCKET_ID socket_id);
65 #else
66 extern void RIL_onUnsolicitedResponse(int unsolResponse, const void *data,
67 size_t datalen);
68 #endif
69
70 extern void RIL_requestTimedCallback (RIL_TimedCallback callback,
71 void *param, const struct timeval *relativeTime);
72
73
74 static struct RIL_Env s_rilEnv = {
75 RIL_onRequestComplete,
76 RIL_onUnsolicitedResponse,
77 RIL_requestTimedCallback,
78 RIL_onRequestAck
79 };
80
81 extern void RIL_startEventLoop();
82
make_argv(char * args,char ** argv)83 static int make_argv(char * args, char ** argv) {
84 // Note: reserve argv[0]
85 int count = 1;
86 char * tok;
87 char * s = args;
88
89 while ((tok = strtok(s, " \0"))) {
90 argv[count] = tok;
91 s = NULL;
92 count++;
93 }
94 return count;
95 }
96
main(int argc,char ** argv)97 int main(int argc, char **argv) {
98 // vendor ril lib path either passed in as -l parameter, or read from rild.libpath property
99 const char *rilLibPath = NULL;
100 // ril arguments either passed in as -- parameter, or read from rild.libargs property
101 char **rilArgv;
102 // handle for vendor ril lib
103 void *dlHandle;
104 // Pointer to ril init function in vendor ril
105 const RIL_RadioFunctions *(*rilInit)(const struct RIL_Env *, int, char **);
106 // Pointer to sap init function in vendor ril
107 const RIL_RadioFunctions *(*rilUimInit)(const struct RIL_Env *, int, char **);
108 const char *err_str = NULL;
109
110 // functions returned by ril init function in vendor ril
111 const RIL_RadioFunctions *funcs;
112 // lib path from rild.libpath property (if it's read)
113 char libPath[PROPERTY_VALUE_MAX];
114 // flat to indicate if -- parameters are present
115 unsigned char hasLibArgs = 0;
116
117 int i;
118 // ril/socket id received as -c parameter, otherwise set to 0
119 const char *clientId = NULL;
120
121 RLOGD("**RIL Daemon Started - Version 1.4**");
122 RLOGD("**RILd param count=%d**", argc);
123
124 umask(S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH | S_IWOTH | S_IXOTH);
125 for (i = 1; i < argc ;) {
126 if (0 == strcmp(argv[i], "-l") && (argc - i > 1)) {
127 rilLibPath = argv[i + 1];
128 i += 2;
129 } else if (0 == strcmp(argv[i], "--")) {
130 i++;
131 hasLibArgs = 1;
132 break;
133 } else if (0 == strcmp(argv[i], "-c") && (argc - i > 1)) {
134 clientId = argv[i+1];
135 i += 2;
136 } else {
137 usage(argv[0]);
138 }
139 }
140
141 if (clientId == NULL) {
142 clientId = "0";
143 } else if (atoi(clientId) >= MAX_RILDS) {
144 RLOGE("Max Number of rild's supported is: %d", MAX_RILDS);
145 exit(0);
146 }
147 if (strncmp(clientId, "0", MAX_CLIENT_ID_LENGTH)) {
148 snprintf(ril_service_name, sizeof(ril_service_name), "%s%s", ril_service_name_base,
149 clientId);
150 }
151
152 if (rilLibPath == NULL) {
153 if ( 0 == property_get(LIB_PATH_PROPERTY, libPath, NULL)) {
154 // No lib sepcified on the command line, and nothing set in props.
155 // Assume "no-ril" case.
156 goto done;
157 } else {
158 rilLibPath = libPath;
159 }
160 }
161
162 dlHandle = dlopen(rilLibPath, RTLD_NOW);
163
164 if (dlHandle == NULL) {
165 RLOGE("dlopen failed: %s", dlerror());
166 exit(EXIT_FAILURE);
167 }
168
169 RIL_startEventLoop();
170
171 rilInit =
172 (const RIL_RadioFunctions *(*)(const struct RIL_Env *, int, char **))
173 dlsym(dlHandle, "RIL_Init");
174
175 if (rilInit == NULL) {
176 RLOGE("RIL_Init not defined or exported in %s\n", rilLibPath);
177 exit(EXIT_FAILURE);
178 }
179
180 dlerror(); // Clear any previous dlerror
181 rilUimInit =
182 (const RIL_RadioFunctions *(*)(const struct RIL_Env *, int, char **))
183 dlsym(dlHandle, "RIL_SAP_Init");
184 err_str = dlerror();
185 if (err_str) {
186 RLOGW("RIL_SAP_Init not defined or exported in %s: %s\n", rilLibPath, err_str);
187 } else if (!rilUimInit) {
188 RLOGW("RIL_SAP_Init defined as null in %s. SAP Not usable\n", rilLibPath);
189 }
190
191 if (hasLibArgs) {
192 rilArgv = argv + i - 1;
193 argc = argc -i + 1;
194 } else {
195 static char * newArgv[MAX_LIB_ARGS];
196 static char args[PROPERTY_VALUE_MAX];
197 rilArgv = newArgv;
198 property_get(LIB_ARGS_PROPERTY, args, "");
199 argc = make_argv(args, rilArgv);
200 }
201
202 rilArgv[argc++] = "-c";
203 rilArgv[argc++] = (char*)clientId;
204 RLOGD("RIL_Init argc = %d clientId = %s", argc, rilArgv[argc-1]);
205
206 // Make sure there's a reasonable argv[0]
207 rilArgv[0] = argv[0];
208
209 funcs = rilInit(&s_rilEnv, argc, rilArgv);
210 RLOGD("RIL_Init rilInit completed");
211
212 RLOGD("RIL_Init callback versions = %d", funcs->version);
213
214 RIL_register(funcs);
215
216 RLOGD("RIL_Init RIL_register completed");
217
218 if (rilUimInit) {
219 RLOGD("RIL_register_socket started");
220 RIL_register_socket(rilUimInit, RIL_SAP_SOCKET, argc, rilArgv);
221 }
222
223 RLOGD("RIL_register_socket completed");
224
225 done:
226
227 rilc_thread_pool();
228
229 RLOGD("RIL_Init starting sleep loop");
230 while (true) {
231 sleep(UINT32_MAX);
232 }
233 }
234