1 | /* |
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2 | * main.c -- Main program for the GoAhead WebServer (RTEMS version) |
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3 | * |
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4 | * Copyright (c) Go Ahead Software Inc., 1995-1999. All Rights Reserved. |
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5 | * |
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6 | * See the file "license.txt" for usage and redistribution license requirements |
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7 | * |
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8 | * $Id$ |
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9 | */ |
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10 | |
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11 | /******************************** Description *********************************/ |
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12 | |
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13 | /* |
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14 | * Main program for for the GoAhead WebServer. This is a demonstration |
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15 | * main program to initialize and configure the web server. |
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16 | */ |
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17 | |
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18 | /********************************* Includes ***********************************/ |
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19 | |
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20 | #include "uemf.h" |
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21 | #include "wsIntrn.h" |
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22 | #include <signal.h> |
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23 | #include <sys/time.h> |
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24 | #include <pthread.h> |
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25 | |
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26 | #include <rtems/error.h> |
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27 | |
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28 | /*********************************** Locals ***********************************/ |
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29 | /* |
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30 | * Change configuration here |
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31 | */ |
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32 | |
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33 | static char_t *rootWeb = T("web"); /* Root web directory */ |
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34 | static char_t *password = T(""); /* Security password */ |
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35 | static int port = 80; /* Server port */ |
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36 | static int retries = 5; /* Server port retries */ |
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37 | static int finished; /* Finished flag */ |
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38 | |
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39 | /* |
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40 | * Structure to hold timer events |
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41 | */ |
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42 | typedef struct { |
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43 | void (*routine)(long arg); /* Timer routine */ |
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44 | long arg; /* Argument to routine */ |
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45 | } websTimer_t; |
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46 | |
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47 | /* The following holds the pointer to an allocated websTimer_t structure . |
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48 | * Using this method only one timer can be active at a time, but |
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49 | * for the WebServer, this should be OK. |
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50 | */ |
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51 | websTimer_t *tp; |
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52 | |
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53 | /****************************** Forward Declarations **************************/ |
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54 | |
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55 | static int initWebs(); |
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56 | static int aspTest(int eid, webs_t wp, int argc, char_t **argv); |
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57 | static void formTest(webs_t wp, char_t *path, char_t *query); |
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58 | static int websHomePageHandler(webs_t wp, char_t *urlPrefix, char_t *webDir, |
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59 | int arg, char_t* url, char_t* path, char_t* query); |
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60 | static void timerProc(int signo); |
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61 | #if B_STATS |
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62 | static void printMemStats(int handle, char_t *fmt, ...); |
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63 | static void memLeaks(); |
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64 | #endif |
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65 | static timer_t timer_id; |
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66 | static void rtems_httpd_daemon(); |
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67 | |
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68 | /*********************************** Code *************************************/ |
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69 | /* |
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70 | * Main -- entry point from RTEMS |
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71 | */ |
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72 | int rtems_initialize_webserver() |
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73 | { |
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74 | rtems_status_code sc; |
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75 | rtems_id tid; |
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76 | int priority; |
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77 | |
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78 | /*********************************************************************** |
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79 | * Default HTTPD priority. |
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80 | **********************************************************************/ |
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81 | priority = 40; |
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82 | |
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83 | sc = rtems_task_create(rtems_build_name('H', 'T', 'P', 'D'), |
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84 | priority, 8*1024, |
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85 | RTEMS_PREEMPT | RTEMS_NO_TIMESLICE | RTEMS_NO_ASR | |
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86 | RTEMS_INTERRUPT_LEVEL(0), |
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87 | RTEMS_NO_FLOATING_POINT | RTEMS_LOCAL, |
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88 | &tid); |
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89 | if (sc != RTEMS_SUCCESSFUL) |
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90 | { |
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91 | return(RTEMS_UNSATISFIED); |
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92 | } |
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93 | |
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94 | sc = rtems_task_start(tid, rtems_httpd_daemon, 0); |
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95 | if (sc != RTEMS_SUCCESSFUL) |
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96 | { |
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97 | return(RTEMS_UNSATISFIED); |
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98 | } |
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99 | |
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100 | return(RTEMS_SUCCESSFUL); |
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101 | |
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102 | } |
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103 | |
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104 | static void |
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105 | rtems_httpd_daemon() |
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106 | { |
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107 | /* |
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108 | * Initialize the memory allocator. Allow use of malloc and start with a |
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109 | * 10K heap. |
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110 | */ |
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111 | bopen(NULL, (10 * 1024), B_USE_MALLOC); |
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112 | |
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113 | /* |
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114 | * Initialize the web server |
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115 | */ |
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116 | if (initWebs() < 0) { |
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117 | rtems_panic("Unable to initialize Web server !!\n"); |
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118 | } |
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119 | |
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120 | /* |
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121 | * Basic event loop. SocketReady returns true when a socket is ready for |
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122 | * service. SocketSelect will block until an event occurs. SocketProcess |
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123 | * will actually do the servicing. |
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124 | */ |
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125 | while (!finished) { |
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126 | if (socketReady() || socketSelect()) { |
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127 | socketProcess(); |
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128 | } |
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129 | } |
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130 | |
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131 | /* |
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132 | * Close the socket module, report memory leaks and close the memory allocator |
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133 | */ |
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134 | websCloseServer(); |
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135 | socketClose(); |
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136 | #if B_STATS |
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137 | memLeaks(); |
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138 | #endif |
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139 | bclose(); |
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140 | rtems_task_delete( RTEMS_SELF ); |
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141 | } |
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142 | |
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143 | /******************************************************************************/ |
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144 | /* |
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145 | * Initialize the web server. |
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146 | */ |
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147 | |
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148 | static int initWebs() |
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149 | { |
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150 | struct hostent* hp; |
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151 | struct in_addr intaddr; |
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152 | char host[128], dir[128], webdir[128]; |
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153 | char *cp; |
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154 | char_t wbuf[128]; |
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155 | |
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156 | /* |
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157 | * Initialize the socket subsystem |
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158 | */ |
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159 | socketOpen(); |
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160 | |
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161 | /* |
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162 | * Define the local Ip address, host name, default home page and the |
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163 | * root web directory. |
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164 | */ |
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165 | if (gethostname(host, sizeof(host)) < 0) { |
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166 | error(E_L, E_LOG, T("Can't get hostname")); |
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167 | return -1; |
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168 | } |
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169 | |
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170 | /* intaddr.s_addr = (unsigned long) hostGetByName(host); */ |
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171 | if ((hp = gethostbyname(host)) == NULL) { |
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172 | error(E_L, E_LOG, T("Can't get host address")); |
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173 | return -1; |
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174 | } |
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175 | memcpy((char *) &intaddr, (char *) hp->h_addr_list[0], |
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176 | (size_t) hp->h_length); |
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177 | |
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178 | /* |
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179 | * Set ../web as the root web. Modify this to suit your needs |
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180 | */ |
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181 | getcwd(dir, sizeof(dir)); |
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182 | if ((cp = strrchr(dir, '/'))) { |
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183 | *cp = '\0'; |
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184 | } |
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185 | sprintf(webdir, "%s/%s", dir, rootWeb); |
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186 | |
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187 | /* |
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188 | * Configure the web server options before opening the web server |
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189 | */ |
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190 | websSetDefaultDir(webdir); |
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191 | ascToUni(wbuf, inet_ntoa(intaddr), sizeof(wbuf)); |
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192 | websSetIpaddr(wbuf); |
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193 | ascToUni(wbuf, host, sizeof(wbuf)); |
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194 | websSetHost(wbuf); |
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195 | |
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196 | /* |
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197 | * Configure the web server options before opening the web server |
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198 | */ |
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199 | websSetDefaultPage(T("default.asp")); |
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200 | websSetPassword(password); |
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201 | |
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202 | /* |
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203 | * Open the web server on the given port. If that port is taken, try |
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204 | * the next sequential port for up to "retries" attempts. |
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205 | */ |
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206 | websOpenServer(port, retries); |
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207 | |
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208 | /* |
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209 | * First create the URL handlers. Note: handlers are called in sorted order |
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210 | * with the longest path handler examined first. Here we define the security |
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211 | * handler, forms handler and the default web page handler. |
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212 | */ |
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213 | websUrlHandlerDefine(T(""), NULL, 0, websSecurityHandler, |
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214 | WEBS_HANDLER_FIRST); |
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215 | websUrlHandlerDefine(T("/goform"), NULL, 0, websFormHandler, 0); |
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216 | websUrlHandlerDefine(T(""), NULL, 0, websDefaultHandler, |
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217 | WEBS_HANDLER_LAST); |
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218 | |
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219 | /* |
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220 | * Now define two test procedures. Replace these with your application |
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221 | * relevant ASP script procedures and form functions. |
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222 | */ |
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223 | websAspDefine(T("aspTest"), aspTest); |
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224 | websFormDefine(T("formTest"), formTest); |
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225 | |
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226 | /* |
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227 | * Create a handler for the default home page |
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228 | */ |
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229 | websUrlHandlerDefine(T("/"), NULL, 0, websHomePageHandler, 0); |
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230 | return 0; |
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231 | } |
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232 | |
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233 | /******************************************************************************/ |
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234 | /* |
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235 | * Test Javascript binding for ASP. This will be invoked when "aspTest" is |
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236 | * embedded in an ASP page. See web/asp.asp for usage. Set browser to |
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237 | * "localhost/asp.asp" to test. |
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238 | */ |
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239 | |
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240 | static int aspTest(int eid, webs_t wp, int argc, char_t **argv) |
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241 | { |
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242 | char_t *name, *address; |
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243 | |
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244 | if (ejArgs(argc, argv, T("%s %s"), &name, &address) < 2) { |
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245 | websError(wp, 400, T("Insufficient args\n")); |
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246 | return -1; |
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247 | } |
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248 | return websWrite(wp, T("Name: %s, Address %s"), name, address); |
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249 | } |
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250 | /******************************************************************************/ |
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251 | /* |
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252 | * Test form for posted data (in-memory CGI). This will be called when the |
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253 | * form in web/asp.asp is invoked. Set browser to "localhost/asp.asp" to test. |
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254 | */ |
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255 | |
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256 | static void formTest(webs_t wp, char_t *path, char_t *query) |
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257 | { |
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258 | char_t *name, *address; |
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259 | |
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260 | name = websGetVar(wp, T("name"), T("Joe Smith")); |
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261 | address = websGetVar(wp, T("address"), T("1212 Milky Way Ave.")); |
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262 | |
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263 | websHeader(wp); |
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264 | websWrite(wp, T("<body><h2>Name: %s, Address: %s</h2>\n"), name, address); |
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265 | websFooter(wp); |
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266 | websDone(wp, 200); |
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267 | } |
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268 | |
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269 | /******************************************************************************/ |
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270 | /* |
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271 | * Create a timer to invoke the routine in "delay" milliseconds. |
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272 | */ |
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273 | |
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274 | void *emfCreateTimer(int delay, void (*routine)(long arg), long arg) |
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275 | { |
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276 | /* this variable is only used in the if'ed 0 section below */ |
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277 | #if 0 |
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278 | struct sigaction act; |
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279 | #endif |
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280 | struct itimerspec its = { {0,0}, {0,0} }; |
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281 | struct sigevent se; |
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282 | int status; |
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283 | |
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284 | if ((tp = balloc(B_L, sizeof(websTimer_t)))) { |
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285 | tp->routine = routine; |
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286 | tp->arg = arg; |
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287 | } |
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288 | else { |
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289 | return NULL; |
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290 | } |
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291 | |
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292 | se.sigev_notify = SIGEV_THREAD; |
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293 | se.sigev_value.sival_ptr = tp; |
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294 | se.sigev_notify_function = (void (*)(union sigval)) timerProc; |
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295 | |
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296 | /* |
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297 | * NOT POSIX? |
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298 | * se.sigev_notify_attributes = NULL; |
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299 | */ |
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300 | |
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301 | |
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302 | status = timer_create(CLOCK_REALTIME, &se, &timer_id); |
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303 | if (status != 0) { |
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304 | bfree(B_L, tp); |
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305 | return NULL; |
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306 | } |
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307 | /* convert delay millisecs to secs and usecs required by struct */ |
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308 | its.it_value.tv_sec = delay / 1000; |
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309 | its.it_value.tv_nsec = (delay % 1000) * 1000000; |
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310 | |
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311 | status = timer_settime(timer_id, 0, &its, 0); |
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312 | if (status != 0) { |
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313 | bfree(B_L, tp); |
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314 | return NULL; |
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315 | } |
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316 | |
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317 | #if 0 |
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318 | act.sa_flags = 0; |
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319 | sigemptyset(&act.sa_mask); |
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320 | act.sa_handler = timerProc; |
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321 | sigaction(SIGALRM, &act, NULL); |
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322 | |
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323 | /* convert delay millisecs to secs and usecs required by struct */ |
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324 | its.it_value.tv_sec = delay / 1000; |
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325 | its.it_value.tv_usec = (delay % 1000) * 1000; |
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326 | |
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327 | if (setitimer(ITIMER_REAL, &its, NULL) == -1) { |
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328 | bfree(B_L, tp); |
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329 | return NULL; |
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330 | } |
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331 | #endif |
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332 | return tp; |
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333 | } |
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334 | |
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335 | /******************************************************************************/ |
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336 | /* |
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337 | * Delete a timer |
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338 | */ |
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339 | |
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340 | void emfDeleteTimer(void * id) |
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341 | { |
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342 | websTimer_t *wtp; |
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343 | /*struct itimerval its = { {0,0}, {0,0} };*/ |
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344 | |
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345 | wtp = (websTimer_t *)id; |
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346 | /* setitimer(ITIMER_REAL, &its, NULL);*/ |
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347 | timer_delete(timer_id); |
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348 | bfree(B_L, wtp); |
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349 | } |
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350 | |
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351 | /******************************************************************************/ |
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352 | /* |
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353 | * Timer handler |
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354 | */ |
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355 | |
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356 | static void timerProc(int signo) |
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357 | { |
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358 | websTimer_t wtp = *tp; |
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359 | |
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360 | /* Copy the timer structure to a local first and delete it before calling |
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361 | * the function, since the function could create another timer. In this |
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362 | * implementation, only one timer can be allocated at a time. |
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363 | */ |
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364 | |
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365 | bfree(B_L, tp); |
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366 | (wtp.routine)(wtp.arg); |
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367 | } |
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368 | |
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369 | /******************************************************************************/ |
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370 | /* |
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371 | * Home page handler |
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372 | */ |
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373 | |
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374 | static int websHomePageHandler(webs_t wp, char_t *urlPrefix, char_t *webDir, |
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375 | int arg, char_t* url, char_t* path, char_t* query) |
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376 | { |
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377 | /* |
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378 | * If the empty or "/" URL is invoked, redirect default URLs to the home page |
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379 | */ |
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380 | if (*url == '\0' || gstrcmp(url, T("/")) == 0) { |
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381 | websRedirect(wp, T("home.asp")); |
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382 | return 1; |
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383 | } |
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384 | return 0; |
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385 | } |
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386 | |
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387 | /******************************************************************************/ |
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388 | |
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389 | #if B_STATS |
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390 | static void memLeaks() |
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391 | { |
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392 | int fd; |
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393 | |
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394 | if ((fd = gopen(T("leak.txt"), O_CREAT | O_TRUNC | O_WRONLY)) >= 0) { |
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395 | bstats(fd, printMemStats); |
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396 | close(fd); |
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397 | } |
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398 | } |
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399 | |
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400 | /******************************************************************************/ |
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401 | /* |
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402 | * Print memory usage / leaks |
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403 | */ |
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404 | |
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405 | static void printMemStats(int handle, char_t *fmt, ...) |
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406 | { |
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407 | va_list args; |
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408 | char_t buf[256]; |
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409 | |
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410 | va_start(args, fmt); |
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411 | vsprintf(buf, fmt, args); |
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412 | va_end(args); |
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413 | write(handle, buf, strlen(buf)); |
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414 | } |
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415 | #endif |
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416 | |
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417 | /******************************************************************************/ |
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