1 | /* |
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2 | * Copyright 2001 Massachusetts Institute of Technology |
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3 | * |
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4 | * Permission to use, copy, modify, and distribute this software and |
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5 | * its documentation for any purpose and without fee is hereby |
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6 | * granted, provided that the above copyright notice and this |
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7 | * permission notice appear in all copies and in supporting |
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8 | * documentation. No representation is made about the suitability of |
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9 | * this software for any purpose. It is provided "as is" without |
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10 | * express or implied warranty. |
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11 | */ |
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12 | |
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13 | #include <stdio.h> |
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14 | #include <unistd.h> |
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15 | #include <stdlib.h> |
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16 | #include <string.h> |
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17 | #include <signal.h> |
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18 | #include <time.h> |
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19 | #include <sys/param.h> |
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20 | #include <sys/types.h> |
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21 | #include <sys/stat.h> |
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22 | #include "owl.h" |
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23 | |
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24 | #if OWL_STDERR_REDIR |
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25 | #include <sys/ioctl.h> |
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26 | int stderr_replace(void); |
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27 | void stderr_redirect(int rfd); |
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28 | #endif |
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29 | |
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30 | static const char fileIdent[] = "$Id$"; |
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31 | |
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32 | owl_global g; |
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33 | |
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34 | int main(int argc, char **argv, char **env) { |
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35 | WINDOW *recwin, *sepwin, *typwin, *msgwin; |
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36 | owl_editwin *tw; |
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37 | owl_popwin *pw; |
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38 | int j, ret, initialsubs, debug, argcsave, followlast; |
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39 | int newmsgs, zpendcount, nexttimediff; |
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40 | struct sigaction sigact; |
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41 | char *configfile, *tty, *perlout, *perlerr, **argvsave, buff[LINE], startupmsg[LINE]; |
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42 | owl_filter *f; |
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43 | owl_style *s; |
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44 | time_t nexttime, now; |
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45 | struct tm *today; |
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46 | char *dir; |
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47 | #ifdef HAVE_LIBZEPHYR |
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48 | ZNotice_t notice; |
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49 | #endif |
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50 | #if OWL_STDERR_REDIR |
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51 | int newstderr; |
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52 | #endif |
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53 | |
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54 | argcsave=argc; |
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55 | argvsave=argv; |
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56 | configfile=NULL; |
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57 | tty=NULL; |
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58 | debug=0; |
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59 | initialsubs=1; |
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60 | if (argc>0) { |
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61 | argv++; |
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62 | argc--; |
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63 | } |
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64 | while (argc>0) { |
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65 | if (!strcmp(argv[0], "-n")) { |
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66 | initialsubs=0; |
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67 | argv++; |
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68 | argc--; |
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69 | } else if (!strcmp(argv[0], "-c")) { |
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70 | if (argc<2) { |
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71 | fprintf(stderr, "Too few arguments to -c\n"); |
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72 | usage(); |
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73 | exit(1); |
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74 | } |
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75 | configfile=argv[1]; |
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76 | argv+=2; |
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77 | argc-=2; |
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78 | } else if (!strcmp(argv[0], "-t")) { |
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79 | if (argc<2) { |
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80 | fprintf(stderr, "Too few arguments to -t\n"); |
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81 | usage(); |
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82 | exit(1); |
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83 | } |
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84 | tty=argv[1]; |
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85 | argv+=2; |
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86 | argc-=2; |
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87 | } else if (!strcmp(argv[0], "-d")) { |
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88 | debug=1; |
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89 | argv++; |
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90 | argc--; |
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91 | } else if (!strcmp(argv[0], "-v")) { |
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92 | printf("This is owl version %s\n", OWL_VERSION_STRING); |
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93 | exit(0); |
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94 | } else { |
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95 | fprintf(stderr, "Uknown argument\n"); |
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96 | usage(); |
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97 | exit(1); |
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98 | } |
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99 | } |
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100 | |
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101 | #ifdef HAVE_LIBZEPHYR |
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102 | /* zephyr init */ |
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103 | ret=owl_zephyr_initialize(); |
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104 | if (ret) { |
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105 | exit(1); |
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106 | } |
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107 | #endif |
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108 | |
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109 | /* signal handler */ |
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110 | sigact.sa_handler=sig_handler; |
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111 | sigemptyset(&sigact.sa_mask); |
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112 | sigact.sa_flags=0; |
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113 | sigaction(SIGWINCH, &sigact, NULL); |
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114 | sigaction(SIGALRM, &sigact, NULL); |
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115 | |
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116 | /* screen init */ |
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117 | sprintf(buff, "TERMINFO=%s", TERMINFO); |
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118 | putenv(buff); |
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119 | initscr(); |
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120 | start_color(); |
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121 | #ifdef HAVE_USE_DEFAULT_COLORS |
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122 | use_default_colors(); |
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123 | #endif |
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124 | raw(); |
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125 | noecho(); |
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126 | |
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127 | /* define simple color pairs */ |
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128 | if (has_colors() && COLOR_PAIRS>=8) { |
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129 | init_pair(OWL_COLOR_BLACK, COLOR_BLACK, -1); |
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130 | init_pair(OWL_COLOR_RED, COLOR_RED, -1); |
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131 | init_pair(OWL_COLOR_GREEN, COLOR_GREEN, -1); |
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132 | init_pair(OWL_COLOR_YELLOW, COLOR_YELLOW, -1); |
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133 | init_pair(OWL_COLOR_BLUE, COLOR_BLUE, -1); |
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134 | init_pair(OWL_COLOR_MAGENTA, COLOR_MAGENTA, -1); |
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135 | init_pair(OWL_COLOR_CYAN, COLOR_CYAN, -1); |
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136 | init_pair(OWL_COLOR_WHITE, COLOR_WHITE, -1); |
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137 | } |
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138 | |
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139 | /* owl global init */ |
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140 | owl_global_init(&g); |
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141 | if (debug) owl_global_set_debug_on(&g); |
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142 | owl_global_set_startupargs(&g, argcsave, argvsave); |
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143 | #ifdef HAVE_LIBZEPHYR |
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144 | owl_global_set_havezephyr(&g); |
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145 | #endif |
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146 | owl_global_set_haveaim(&g); |
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147 | |
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148 | #if OWL_STDERR_REDIR |
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149 | /* Do this only after we've started curses up... */ |
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150 | newstderr = stderr_replace(); |
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151 | #endif |
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152 | |
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153 | |
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154 | /* create the owl directory, in case it does not exist */ |
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155 | dir=owl_sprintf("%s/%s", owl_global_get_homedir(&g), OWL_CONFIG_DIR); |
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156 | mkdir(dir, S_IRWXU); |
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157 | owl_free(dir); |
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158 | |
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159 | /* set the tty, either from the command line, or by figuring it out */ |
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160 | if (tty) { |
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161 | owl_global_set_tty(&g, tty); |
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162 | } else { |
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163 | owl_global_set_tty(&g, owl_util_get_default_tty()); |
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164 | } |
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165 | |
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166 | /* setup the built-in styles */ |
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167 | s=owl_malloc(sizeof(owl_style)); |
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168 | owl_style_create_internal(s, "default", &owl_stylefunc_default, |
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169 | "Default message formatting"); |
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170 | owl_global_add_style(&g, s); |
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171 | |
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172 | s=owl_malloc(sizeof(owl_style)); |
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173 | owl_style_create_internal(s, "basic", &owl_stylefunc_basic, |
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174 | "Basic message formatting."); |
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175 | owl_global_add_style(&g, s); |
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176 | #if 0 |
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177 | s=owl_malloc(sizeof(owl_style)); |
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178 | owl_style_create_internal(s, "vt", &owl_stylefunc_vt, |
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179 | "VT message formatting."); |
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180 | owl_global_add_style(&g, s); |
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181 | #endif |
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182 | s=owl_malloc(sizeof(owl_style)); |
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183 | owl_style_create_internal(s, "oneline", &owl_stylefunc_oneline, |
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184 | "Formats for one-line-per-message"); |
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185 | owl_global_add_style(&g, s); |
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186 | |
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187 | /* setup the default filters */ |
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188 | /* the personal filter will need to change again when AIM chat's are |
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189 | * included. Also, there should be an %aimme% */ |
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190 | f=owl_malloc(sizeof(owl_filter)); |
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191 | owl_filter_init_fromstring(f, "personal", "( type ^zephyr$ " |
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192 | "and class ^message$ and instance ^personal$ " |
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193 | "and ( recipient ^%me%$ or sender ^%me%$ ) ) " |
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194 | "or ( type ^aim$ and login ^none$ )"); |
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195 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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196 | |
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197 | f=owl_malloc(sizeof(owl_filter)); |
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198 | owl_filter_init_fromstring(f, "trash", "class ^mail$ or opcode ^ping$ or type ^admin$ or ( not login ^none$ )"); |
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199 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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200 | |
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201 | f=owl_malloc(sizeof(owl_filter)); |
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202 | owl_filter_init_fromstring(f, "ping", "opcode ^ping$"); |
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203 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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204 | |
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205 | f=owl_malloc(sizeof(owl_filter)); |
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206 | owl_filter_init_fromstring(f, "auto", "opcode ^auto$"); |
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207 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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208 | |
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209 | f=owl_malloc(sizeof(owl_filter)); |
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210 | owl_filter_init_fromstring(f, "login", "not login ^none$"); |
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211 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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212 | |
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213 | f=owl_malloc(sizeof(owl_filter)); |
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214 | owl_filter_init_fromstring(f, "reply-lockout", "class ^noc or class ^mail$"); |
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215 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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216 | |
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217 | f=owl_malloc(sizeof(owl_filter)); |
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218 | owl_filter_init_fromstring(f, "out", "direction ^out$"); |
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219 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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220 | |
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221 | f=owl_malloc(sizeof(owl_filter)); |
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222 | owl_filter_init_fromstring(f, "aim", "type ^aim$"); |
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223 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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224 | |
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225 | f=owl_malloc(sizeof(owl_filter)); |
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226 | owl_filter_init_fromstring(f, "zephyr", "type ^zephyr$"); |
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227 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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228 | |
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229 | f=owl_malloc(sizeof(owl_filter)); |
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230 | owl_filter_init_fromstring(f, "none", "false"); |
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231 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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232 | |
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233 | f=owl_malloc(sizeof(owl_filter)); |
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234 | owl_filter_init_fromstring(f, "all", "true"); |
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235 | owl_list_append_element(owl_global_get_filterlist(&g), f); |
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236 | |
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237 | /* set the current view */ |
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238 | owl_view_create(owl_global_get_current_view(&g), "main", f, owl_global_get_style_by_name(&g, "default")); |
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239 | |
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240 | /* AIM init */ |
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241 | owl_aim_init(); |
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242 | |
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243 | /* process the startup file */ |
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244 | owl_function_source(NULL); |
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245 | |
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246 | /* read the config file */ |
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247 | owl_context_set_readconfig(owl_global_get_context(&g)); |
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248 | perlerr=owl_perlconfig_readconfig(configfile); |
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249 | if (perlerr) { |
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250 | endwin(); |
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251 | fprintf(stderr, "\nError parsing configfile: %s\n", perlerr); |
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252 | exit(1); |
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253 | } |
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254 | |
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255 | /* if the config defines a formatting function, add 'perl' as a style */ |
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256 | if (owl_global_is_config_format(&g)) { |
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257 | owl_function_debugmsg("Found perl formatting"); |
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258 | s=owl_malloc(sizeof(owl_style)); |
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259 | owl_style_create_perl(s, "perl", "owl::_format_msg_legacy_wrap", |
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260 | "User-defined perl style that calls owl::format_msg" |
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261 | "with legacy global variable support"); |
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262 | owl_global_add_style(&g, s); |
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263 | owl_global_set_default_style(&g, "perl"); |
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264 | } |
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265 | |
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266 | /* execute the startup function in the configfile */ |
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267 | perlout = owl_perlconfig_execute("owl::startup();"); |
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268 | if (perlout) owl_free(perlout); |
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269 | owl_function_debugmsg("-- Owl Startup --"); |
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270 | |
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271 | /* hold on to the window names for convenience */ |
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272 | msgwin=owl_global_get_curs_msgwin(&g); |
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273 | recwin=owl_global_get_curs_recwin(&g); |
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274 | sepwin=owl_global_get_curs_sepwin(&g); |
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275 | typwin=owl_global_get_curs_typwin(&g); |
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276 | tw=owl_global_get_typwin(&g); |
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277 | |
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278 | wrefresh(sepwin); |
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279 | |
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280 | /* load zephyr subs */ |
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281 | if (initialsubs) { |
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282 | /* load normal subscriptions */ |
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283 | ret=owl_zephyr_loadsubs(NULL); |
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284 | if (ret!=-1) { |
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285 | owl_global_add_userclue(&g, OWL_USERCLUE_CLASSES); |
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286 | } |
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287 | |
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288 | /* load login subscriptions */ |
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289 | if (owl_global_is_loginsubs(&g)) { |
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290 | owl_function_loadloginsubs(NULL); |
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291 | } |
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292 | } |
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293 | |
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294 | /* set the startup and default style, based on userclue and presence of a |
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295 | * formatting function */ |
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296 | if (0 != strcmp(owl_global_get_default_style(&g), "__unspecified__")) { |
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297 | /* the style was set by the user: leave it alone */ |
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298 | } else if (owl_global_is_config_format(&g)) { |
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299 | owl_global_set_default_style(&g, "perl"); |
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300 | } else if (owl_global_is_userclue(&g, OWL_USERCLUE_CLASSES)) { |
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301 | owl_global_set_default_style(&g, "default"); |
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302 | } else { |
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303 | owl_global_set_default_style(&g, "basic"); |
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304 | } |
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305 | |
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306 | /* zlog in if we need to */ |
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307 | if (owl_global_is_startuplogin(&g)) { |
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308 | owl_zephyr_zlog_in(); |
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309 | } |
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310 | |
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311 | owl_view_set_style(owl_global_get_current_view(&g), |
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312 | owl_global_get_style_by_name(&g, owl_global_get_default_style(&g))); |
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313 | |
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314 | /* welcome message */ |
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315 | strcpy(startupmsg, "-------------------------------------------------------------------------\n"); |
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316 | sprintf(buff, "Welcome to Owl version %s. Press 'h' for on-line help. \n", OWL_VERSION_STRING); |
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317 | strcat(startupmsg, buff); |
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318 | strcat(startupmsg, " \n"); |
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319 | strcat(startupmsg, "If you would like to receive release announcements about owl you can join \n"); |
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320 | strcat(startupmsg, "the owl-users@mit.edu mailing list. MIT users can add themselves, \n"); |
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321 | strcat(startupmsg, "otherwise send a request to owner-owl-users@mit.edu. ^ ^ \n"); |
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322 | strcat(startupmsg, " OvO \n"); |
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323 | strcat(startupmsg, "Please report any bugs or suggestions to bug-owl@mit.edu ( ) \n"); |
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324 | strcat(startupmsg, "-------------------------------------------------------------------m-m---\n"); |
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325 | owl_function_adminmsg("", startupmsg); |
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326 | sepbar(NULL); |
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327 | |
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328 | owl_context_set_interactive(owl_global_get_context(&g)); |
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329 | |
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330 | nexttimediff=10; |
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331 | nexttime=time(NULL); |
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332 | |
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333 | /* main loop */ |
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334 | while (1) { |
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335 | |
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336 | /* if a resize has been scheduled, deal with it */ |
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337 | owl_global_resize(&g, 0, 0); |
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338 | |
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339 | /* these are here in case a resize changes the windows */ |
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340 | msgwin=owl_global_get_curs_msgwin(&g); |
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341 | recwin=owl_global_get_curs_recwin(&g); |
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342 | sepwin=owl_global_get_curs_sepwin(&g); |
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343 | typwin=owl_global_get_curs_typwin(&g); |
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344 | |
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345 | followlast=owl_global_should_followlast(&g); |
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346 | |
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347 | /* Do AIM stuff */ |
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348 | if (owl_global_is_doaimevents(&g)) { |
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349 | owl_aim_process_events(); |
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350 | |
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351 | if (owl_global_is_aimloggedin(&g)) { |
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352 | if (owl_timer_is_expired(owl_global_get_aim_buddyinfo_timer(&g))) { |
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353 | /* owl_buddylist_request_idletimes(owl_global_get_buddylist(&g)); */ |
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354 | owl_timer_reset(owl_global_get_aim_buddyinfo_timer(&g)); |
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355 | } |
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356 | } |
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357 | } |
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358 | |
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359 | /* little hack */ |
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360 | now=time(NULL); |
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361 | today=localtime(&now); |
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362 | if (today->tm_mon==9 && today->tm_mday==31 && owl_global_get_runtime(&g)<600) { |
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363 | if (time(NULL)>nexttime) { |
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364 | if (nexttimediff==1) { |
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365 | nexttimediff=10; |
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366 | } else { |
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367 | nexttimediff=1; |
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368 | } |
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369 | nexttime+=nexttimediff; |
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370 | owl_hack_animate(); |
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371 | } |
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372 | } |
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373 | |
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374 | /* Grab incoming messages. */ |
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375 | newmsgs=0; |
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376 | zpendcount=0; |
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377 | while(owl_zephyr_zpending() || owl_global_messagequeue_pending(&g)) { |
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378 | #ifdef HAVE_LIBZEPHYR |
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379 | struct sockaddr_in from; |
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380 | #endif |
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381 | owl_message *m=NULL; |
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382 | owl_filter *f; |
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383 | |
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384 | /* grab the new message, stick it in 'm' */ |
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385 | if (owl_zephyr_zpending()) { |
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386 | #ifdef HAVE_LIBZEPHYR |
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387 | /* grab a zephyr notice, but if we've done 20 without stopping, |
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388 | take a break to process keystrokes etc. */ |
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389 | if (zpendcount>20) break; |
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390 | ZReceiveNotice(¬ice, &from); |
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391 | zpendcount++; |
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392 | |
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393 | /* is this an ack from a zephyr we sent? */ |
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394 | if (owl_zephyr_notice_is_ack(¬ice)) { |
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395 | owl_zephyr_handle_ack(¬ice); |
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396 | continue; |
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397 | } |
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398 | |
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399 | /* if it's a ping and we're not viewing pings then skip it */ |
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400 | if (!owl_global_is_rxping(&g) && !strcasecmp(notice.z_opcode, "ping")) { |
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401 | continue; |
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402 | } |
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403 | |
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404 | /* create the new message */ |
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405 | m=owl_malloc(sizeof(owl_message)); |
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406 | owl_message_create_from_znotice(m, ¬ice); |
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407 | #endif |
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408 | } else if (owl_global_messagequeue_pending(&g)) { |
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409 | m=owl_global_messageuque_popmsg(&g); |
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410 | } |
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411 | |
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412 | /* if this message it on the puntlist, nuke it and continue */ |
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413 | if (owl_global_message_is_puntable(&g, m)) { |
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414 | owl_message_free(m); |
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415 | continue; |
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416 | } |
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417 | |
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418 | /* otherwise add it to the global list */ |
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419 | owl_messagelist_append_element(owl_global_get_msglist(&g), m); |
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420 | newmsgs=1; |
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421 | |
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422 | /* let the config know the new message has been received */ |
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423 | owl_perlconfig_getmsg(m, 0, NULL); |
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424 | |
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425 | /* add it to any necessary views; right now there's only the current view */ |
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426 | owl_view_consider_message(owl_global_get_current_view(&g), m); |
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427 | |
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428 | /* do we need to autoreply? */ |
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429 | if (owl_message_is_type_zephyr(m) && owl_global_is_zaway(&g)) { |
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430 | owl_zephyr_zaway(m); |
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431 | } |
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432 | |
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433 | /* ring the bell if it's a personal */ |
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434 | if (owl_global_is_personalbell(&g) && |
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435 | !owl_message_is_loginout(m) && |
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436 | !owl_message_is_mail(m) && |
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437 | owl_message_is_private(m)) { |
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438 | owl_function_beep(); |
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439 | } |
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440 | |
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441 | /* if it matches the alert filter, do the alert action */ |
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442 | f=owl_global_get_filter(&g, owl_global_get_alert_filter(&g)); |
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443 | if (f && owl_filter_message_match(f, m)) { |
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444 | owl_function_command(owl_global_get_alert_action(&g)); |
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445 | } |
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446 | |
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447 | /* check for burning ears message */ |
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448 | /* this is an unsupported feature */ |
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449 | if (owl_global_is_burningears(&g) && owl_message_is_burningears(m)) { |
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450 | char *buff; |
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451 | buff = owl_sprintf("@i(Burning ears message on class %s)", owl_message_get_class(m)); |
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452 | owl_function_adminmsg(buff, ""); |
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453 | owl_free(buff); |
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454 | owl_function_beep(); |
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455 | } |
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456 | |
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457 | /* log the message if we need to */ |
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458 | if (owl_global_is_logging(&g) || owl_global_is_classlogging(&g)) { |
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459 | owl_log_incoming(m); |
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460 | } |
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461 | } |
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462 | |
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463 | /* follow the last message if we're supposed to */ |
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464 | if (newmsgs && followlast) { |
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465 | owl_function_lastmsg_noredisplay(); |
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466 | } |
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467 | |
---|
468 | /* do the newmsgproc thing */ |
---|
469 | if (newmsgs) { |
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470 | owl_function_do_newmsgproc(); |
---|
471 | } |
---|
472 | |
---|
473 | /* redisplay if necessary */ |
---|
474 | /* this should be optimized to not run if the new messages won't be displayed */ |
---|
475 | if (newmsgs) { |
---|
476 | owl_mainwin_redisplay(owl_global_get_mainwin(&g)); |
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477 | sepbar(NULL); |
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478 | if (owl_popwin_is_active(owl_global_get_popwin(&g))) { |
---|
479 | owl_popwin_refresh(owl_global_get_popwin(&g)); |
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480 | /* TODO: this is a broken kludge */ |
---|
481 | if (owl_global_get_viewwin(&g)) { |
---|
482 | owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0); |
---|
483 | } |
---|
484 | } |
---|
485 | owl_global_set_needrefresh(&g); |
---|
486 | } |
---|
487 | |
---|
488 | /* if a popwin just came up, refresh it */ |
---|
489 | pw=owl_global_get_popwin(&g); |
---|
490 | if (owl_popwin_is_active(pw) && owl_popwin_needs_first_refresh(pw)) { |
---|
491 | owl_popwin_refresh(pw); |
---|
492 | owl_popwin_no_needs_first_refresh(pw); |
---|
493 | owl_global_set_needrefresh(&g); |
---|
494 | /* TODO: this is a broken kludge */ |
---|
495 | if (owl_global_get_viewwin(&g)) { |
---|
496 | owl_viewwin_redisplay(owl_global_get_viewwin(&g), 0); |
---|
497 | } |
---|
498 | } |
---|
499 | |
---|
500 | /* update the terminal if we need to */ |
---|
501 | if (owl_global_is_needrefresh(&g)) { |
---|
502 | /* leave the cursor in the appropriate window */ |
---|
503 | if (owl_global_is_typwin_active(&g)) { |
---|
504 | owl_function_set_cursor(typwin); |
---|
505 | } else { |
---|
506 | owl_function_set_cursor(sepwin); |
---|
507 | } |
---|
508 | doupdate(); |
---|
509 | owl_global_set_noneedrefresh(&g); |
---|
510 | } |
---|
511 | |
---|
512 | /* Handle all keypresses. If no key has been pressed, sleep for a |
---|
513 | * little bit, but otherwise do not. This lets input be grabbed |
---|
514 | * as quickly as possbile */ |
---|
515 | j=wgetch(typwin); |
---|
516 | if (j==ERR) { |
---|
517 | usleep(10); |
---|
518 | continue; |
---|
519 | } |
---|
520 | /* find and activate the current keymap. |
---|
521 | * TODO: this should really get fixed by activating |
---|
522 | * keymaps as we switch between windows... |
---|
523 | */ |
---|
524 | if (pw && owl_popwin_is_active(pw) && owl_global_get_viewwin(&g)) { |
---|
525 | owl_context_set_popless(owl_global_get_context(&g), |
---|
526 | owl_global_get_viewwin(&g)); |
---|
527 | owl_function_activate_keymap("popless"); |
---|
528 | } else if (owl_global_is_typwin_active(&g) |
---|
529 | && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_ONELINE) { |
---|
530 | /* |
---|
531 | owl_context_set_editline(owl_global_get_context(&g), tw); |
---|
532 | owl_function_activate_keymap("editline"); |
---|
533 | */ |
---|
534 | } else if (owl_global_is_typwin_active(&g) |
---|
535 | && owl_editwin_get_style(tw)==OWL_EDITWIN_STYLE_MULTILINE) { |
---|
536 | owl_context_set_editmulti(owl_global_get_context(&g), tw); |
---|
537 | owl_function_activate_keymap("editmulti"); |
---|
538 | } else { |
---|
539 | owl_context_set_recv(owl_global_get_context(&g)); |
---|
540 | owl_function_activate_keymap("recv"); |
---|
541 | } |
---|
542 | /* now actually handle the keypress */ |
---|
543 | ret = owl_keyhandler_process(owl_global_get_keyhandler(&g), j); |
---|
544 | if (ret!=0 && ret!=1) { |
---|
545 | owl_function_makemsg("Unable to handle keypress"); |
---|
546 | } |
---|
547 | |
---|
548 | #if OWL_STDERR_REDIR |
---|
549 | stderr_redirect(newstderr); |
---|
550 | #endif |
---|
551 | |
---|
552 | } |
---|
553 | } |
---|
554 | |
---|
555 | void sig_handler(int sig) { |
---|
556 | if (sig==SIGWINCH) { |
---|
557 | /* we can't inturrupt a malloc here, so it just sets a flag |
---|
558 | * schedulding a resize for later |
---|
559 | */ |
---|
560 | owl_function_resize(); |
---|
561 | } |
---|
562 | } |
---|
563 | |
---|
564 | void usage() { |
---|
565 | fprintf(stderr, "Owl version %s\n", OWL_VERSION_STRING); |
---|
566 | fprintf(stderr, "Usage: owl [-n] [-d] [-v] [-h] [-c <configfile>] [-t <ttyname>]\n"); |
---|
567 | fprintf(stderr, " -n don't load zephyr subscriptions\n"); |
---|
568 | fprintf(stderr, " -d enable debugging\n"); |
---|
569 | fprintf(stderr, " -v print the Owl version number and exit\n"); |
---|
570 | fprintf(stderr, " -h print this help message\n"); |
---|
571 | fprintf(stderr, " -c specify an alternate config file\n"); |
---|
572 | fprintf(stderr, " -t set the tty name\n"); |
---|
573 | } |
---|
574 | |
---|
575 | |
---|
576 | |
---|
577 | #if OWL_STDERR_REDIR |
---|
578 | |
---|
579 | /* Replaces stderr with a pipe so that we can read from it. |
---|
580 | * Returns the fd of the pipe from which stderr can be read. */ |
---|
581 | int stderr_replace(void) { |
---|
582 | int pipefds[2]; |
---|
583 | if (0 != pipe(pipefds)) { |
---|
584 | perror("pipe"); |
---|
585 | owl_function_debugmsg("stderr_replace: pipe FAILED\n"); |
---|
586 | return -1; |
---|
587 | } |
---|
588 | owl_function_debugmsg("stderr_replace: pipe: %d,%d\n", pipefds[0], pipefds[1]); |
---|
589 | if (-1 == dup2(pipefds[1], 2 /*stderr*/)) { |
---|
590 | owl_function_debugmsg("stderr_replace: dup2 FAILED (%s)\n", strerror(errno)); |
---|
591 | perror("dup2"); |
---|
592 | return -1; |
---|
593 | } |
---|
594 | return pipefds[0]; |
---|
595 | } |
---|
596 | |
---|
597 | /* Sends stderr (read from rfd) messages to a file */ |
---|
598 | void stderr_redirect(int rfd) { |
---|
599 | int navail, bread; |
---|
600 | char *buf; |
---|
601 | /*owl_function_debugmsg("stderr_redirect: called with rfd=%d\n", rfd);*/ |
---|
602 | if (rfd<0) return; |
---|
603 | if (-1 == ioctl(rfd, FIONREAD, (void*)&navail)) { |
---|
604 | return; |
---|
605 | } |
---|
606 | /*owl_function_debugmsg("stderr_redirect: navail = %d\n", navail);*/ |
---|
607 | if (navail<=0) return; |
---|
608 | if (navail>256) { navail = 256; } |
---|
609 | buf = owl_malloc(navail+1); |
---|
610 | bread = read(rfd, buf, navail); |
---|
611 | if (buf[navail-1] != '\0') { |
---|
612 | buf[navail] = '\0'; |
---|
613 | } |
---|
614 | owl_function_error("Err: %s", buf); |
---|
615 | owl_free(buf); |
---|
616 | } |
---|
617 | |
---|
618 | #endif /* OWL_STDERR_REDIR */ |
---|