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gotwebd: get rid of proc.[ch] proc.c really shines when there's a network of different types of processes, potentially with a various number of instances each, that needs to exchange messages. Gotwebd instead has a much simpler design, and using proc.c causes more overhead (/headaches) than it solves. So, this attempts to provide the same functionalities but with a much simpler implementation that fits gotwebd better. ok stsp@
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  1 8a35f56c 2022-07-16 thomas /*

  2 8a35f56c 2022-07-16 thomas  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>

  3 8a35f56c 2022-07-16 thomas  *

  4 8a35f56c 2022-07-16 thomas  * Permission to use, copy, modify, and distribute this software for any

  5 8a35f56c 2022-07-16 thomas  * purpose with or without fee is hereby granted, provided that the above

  6 8a35f56c 2022-07-16 thomas  * copyright notice and this permission notice appear in all copies.

  7 8a35f56c 2022-07-16 thomas  *

  8 8a35f56c 2022-07-16 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

  9 8a35f56c 2022-07-16 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 10 8a35f56c 2022-07-16 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 11 8a35f56c 2022-07-16 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 12 8a35f56c 2022-07-16 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 13 8a35f56c 2022-07-16 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 14 8a35f56c 2022-07-16 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 15 8a35f56c 2022-07-16 thomas  */

 16 8a35f56c 2022-07-16 thomas 

 17 4fccd2fe 2023-03-08 thomas #include "got_compat.h"

 18 4fccd2fe 2023-03-08 thomas 

 19 8a35f56c 2022-07-16 thomas #include <stdio.h>

 20 8a35f56c 2022-07-16 thomas #include <stdlib.h>

 21 8a35f56c 2022-07-16 thomas #include <stdarg.h>

 22 8a35f56c 2022-07-16 thomas #include <string.h>

 23 8a35f56c 2022-07-16 thomas #include <syslog.h>

 24 8a35f56c 2022-07-16 thomas #include <errno.h>

 25 8a35f56c 2022-07-16 thomas #include <time.h>

 26 8a35f56c 2022-07-16 thomas 

 27 8a35f56c 2022-07-16 thomas static int	 debug;

 28 8a35f56c 2022-07-16 thomas static int	 verbose;

 29 8a35f56c 2022-07-16 thomas const char	*log_procname;

 30 8a35f56c 2022-07-16 thomas 

 31 8a35f56c 2022-07-16 thomas void	log_init(int, int);

 32 8a35f56c 2022-07-16 thomas void	log_procinit(const char *);

 33 8a35f56c 2022-07-16 thomas void	log_setverbose(int);

 34 8a35f56c 2022-07-16 thomas int	log_getverbose(void);

 35 8a35f56c 2022-07-16 thomas void	log_warn(const char *, ...)

 36 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 1, 2)));

 37 8a35f56c 2022-07-16 thomas void	log_warnx(const char *, ...)

 38 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 1, 2)));

 39 8a35f56c 2022-07-16 thomas void	log_info(const char *, ...)

 40 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 1, 2)));

 41 8a35f56c 2022-07-16 thomas void	log_debug(const char *, ...)

 42 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 1, 2)));

 43 8a35f56c 2022-07-16 thomas void	logit(int, const char *, ...)

 44 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 2, 3)));

 45 8a35f56c 2022-07-16 thomas void	vlog(int, const char *, va_list)

 46 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 2, 0)));

 47 8a35f56c 2022-07-16 thomas __dead void fatal(const char *, ...)

 48 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 1, 2)));

 49 8a35f56c 2022-07-16 thomas __dead void fatalx(const char *, ...)

 50 8a35f56c 2022-07-16 thomas 	    __attribute__((__format__ (printf, 1, 2)));

 51 8a35f56c 2022-07-16 thomas 

 52 8a35f56c 2022-07-16 thomas void

 53 8a35f56c 2022-07-16 thomas log_init(int n_debug, int facility)

 54 8a35f56c 2022-07-16 thomas {

 55 8a35f56c 2022-07-16 thomas 	debug = n_debug;

 56 8a35f56c 2022-07-16 thomas 	verbose = n_debug;

 57 8a35f56c 2022-07-16 thomas 	log_procinit(getprogname());

 58 8a35f56c 2022-07-16 thomas 

 59 8a35f56c 2022-07-16 thomas 	if (!debug)

 60 8a35f56c 2022-07-16 thomas 		openlog(getprogname(), LOG_PID | LOG_NDELAY, facility);

 61 8a35f56c 2022-07-16 thomas 

 62 8a35f56c 2022-07-16 thomas 	tzset();

 63 8a35f56c 2022-07-16 thomas }

 64 8a35f56c 2022-07-16 thomas 

 65 8a35f56c 2022-07-16 thomas void

 66 8a35f56c 2022-07-16 thomas log_procinit(const char *procname)

 67 8a35f56c 2022-07-16 thomas {

 68 8a35f56c 2022-07-16 thomas 	if (procname != NULL)

 69 8a35f56c 2022-07-16 thomas 		log_procname = procname;

 70 8a35f56c 2022-07-16 thomas }

 71 8a35f56c 2022-07-16 thomas 

 72 8a35f56c 2022-07-16 thomas void

 73 8a35f56c 2022-07-16 thomas log_setverbose(int v)

 74 8a35f56c 2022-07-16 thomas {

 75 8a35f56c 2022-07-16 thomas 	verbose = v;

 76 8a35f56c 2022-07-16 thomas }

 77 8a35f56c 2022-07-16 thomas 

 78 8a35f56c 2022-07-16 thomas int

 79 8a35f56c 2022-07-16 thomas log_getverbose(void)

 80 8a35f56c 2022-07-16 thomas {

 81 8a35f56c 2022-07-16 thomas 	return (verbose);

 82 8a35f56c 2022-07-16 thomas }

 83 8a35f56c 2022-07-16 thomas 

 84 8a35f56c 2022-07-16 thomas void

 85 8a35f56c 2022-07-16 thomas logit(int pri, const char *fmt, ...)

 86 8a35f56c 2022-07-16 thomas {

 87 8a35f56c 2022-07-16 thomas 	va_list ap;

 88 8a35f56c 2022-07-16 thomas 

 89 8a35f56c 2022-07-16 thomas 	va_start(ap, fmt);

 90 8a35f56c 2022-07-16 thomas 	vlog(pri, fmt, ap);

 91 8a35f56c 2022-07-16 thomas 	va_end(ap);

 92 8a35f56c 2022-07-16 thomas }

 93 8a35f56c 2022-07-16 thomas 

 94 8a35f56c 2022-07-16 thomas void

 95 8a35f56c 2022-07-16 thomas vlog(int pri, const char *fmt, va_list ap)

 96 8a35f56c 2022-07-16 thomas {

 97 8a35f56c 2022-07-16 thomas 	char *nfmt;

 98 8a35f56c 2022-07-16 thomas 	int saved_errno = errno;

 99 8a35f56c 2022-07-16 thomas 

100 8a35f56c 2022-07-16 thomas 	if (debug) {

101 8a35f56c 2022-07-16 thomas 		/* best effort in out of mem situations */

102 8a35f56c 2022-07-16 thomas 		if (asprintf(&nfmt, "%s\n", fmt) == -1) {

103 8a35f56c 2022-07-16 thomas 			vfprintf(stderr, fmt, ap);

104 8a35f56c 2022-07-16 thomas 			fprintf(stderr, "\n");

105 8a35f56c 2022-07-16 thomas 		} else {

106 8a35f56c 2022-07-16 thomas 			vfprintf(stderr, nfmt, ap);

107 8a35f56c 2022-07-16 thomas 			free(nfmt);

108 8a35f56c 2022-07-16 thomas 		}

109 8a35f56c 2022-07-16 thomas 		fflush(stderr);

110 8a35f56c 2022-07-16 thomas 	} else

111 8a35f56c 2022-07-16 thomas 		vsyslog(pri, fmt, ap);

112 8a35f56c 2022-07-16 thomas 

113 8a35f56c 2022-07-16 thomas 	errno = saved_errno;

114 8a35f56c 2022-07-16 thomas }

115 8a35f56c 2022-07-16 thomas 

116 8a35f56c 2022-07-16 thomas void

117 8a35f56c 2022-07-16 thomas log_warn(const char *emsg, ...)

118 8a35f56c 2022-07-16 thomas {

119 8a35f56c 2022-07-16 thomas 	char *nfmt;

120 8a35f56c 2022-07-16 thomas 	va_list ap;

121 8a35f56c 2022-07-16 thomas 	int saved_errno = errno;

122 8a35f56c 2022-07-16 thomas 

123 8a35f56c 2022-07-16 thomas 	/* best effort to even work in out of memory situations */

124 8a35f56c 2022-07-16 thomas 	if (emsg == NULL)

125 8a35f56c 2022-07-16 thomas 		logit(LOG_CRIT, "%s", strerror(saved_errno));

126 8a35f56c 2022-07-16 thomas 	else {

127 8a35f56c 2022-07-16 thomas 		va_start(ap, emsg);

128 8a35f56c 2022-07-16 thomas 

129 8a35f56c 2022-07-16 thomas 		if (asprintf(&nfmt, "%s: %s", emsg,

130 8a35f56c 2022-07-16 thomas 		    strerror(saved_errno)) == -1) {

131 8a35f56c 2022-07-16 thomas 			/* we tried it... */

132 8a35f56c 2022-07-16 thomas 			vlog(LOG_CRIT, emsg, ap);

133 8a35f56c 2022-07-16 thomas 			logit(LOG_CRIT, "%s", strerror(saved_errno));

134 8a35f56c 2022-07-16 thomas 		} else {

135 8a35f56c 2022-07-16 thomas 			vlog(LOG_CRIT, nfmt, ap);

136 8a35f56c 2022-07-16 thomas 			free(nfmt);

137 8a35f56c 2022-07-16 thomas 		}

138 8a35f56c 2022-07-16 thomas 		va_end(ap);

139 8a35f56c 2022-07-16 thomas 	}

140 8a35f56c 2022-07-16 thomas 

141 8a35f56c 2022-07-16 thomas 	errno = saved_errno;

142 8a35f56c 2022-07-16 thomas }

143 8a35f56c 2022-07-16 thomas 

144 8a35f56c 2022-07-16 thomas void

145 8a35f56c 2022-07-16 thomas log_warnx(const char *emsg, ...)

146 8a35f56c 2022-07-16 thomas {

147 8a35f56c 2022-07-16 thomas 	va_list ap;

148 8a35f56c 2022-07-16 thomas 

149 8a35f56c 2022-07-16 thomas 	va_start(ap, emsg);

150 8a35f56c 2022-07-16 thomas 	vlog(LOG_CRIT, emsg, ap);

151 8a35f56c 2022-07-16 thomas 	va_end(ap);

152 8a35f56c 2022-07-16 thomas }

153 8a35f56c 2022-07-16 thomas 

154 8a35f56c 2022-07-16 thomas void

155 8a35f56c 2022-07-16 thomas log_info(const char *emsg, ...)

156 8a35f56c 2022-07-16 thomas {

157 8a35f56c 2022-07-16 thomas 	va_list ap;

158 8a35f56c 2022-07-16 thomas 

159 8a35f56c 2022-07-16 thomas 	va_start(ap, emsg);

160 8a35f56c 2022-07-16 thomas 	vlog(LOG_INFO, emsg, ap);

161 8a35f56c 2022-07-16 thomas 	va_end(ap);

162 8a35f56c 2022-07-16 thomas }

163 8a35f56c 2022-07-16 thomas 

164 8a35f56c 2022-07-16 thomas void

165 8a35f56c 2022-07-16 thomas log_debug(const char *emsg, ...)

166 8a35f56c 2022-07-16 thomas {

167 8a35f56c 2022-07-16 thomas 	va_list ap;

168 8a35f56c 2022-07-16 thomas 

169 f85c939f 2023-11-22 thomas 	if (verbose) {

170 8a35f56c 2022-07-16 thomas 		va_start(ap, emsg);

171 8a35f56c 2022-07-16 thomas 		vlog(LOG_DEBUG, emsg, ap);

172 8a35f56c 2022-07-16 thomas 		va_end(ap);

173 8a35f56c 2022-07-16 thomas 	}

174 8a35f56c 2022-07-16 thomas }

175 8a35f56c 2022-07-16 thomas 

176 8a35f56c 2022-07-16 thomas static void

177 8a35f56c 2022-07-16 thomas vfatalc(int code, const char *emsg, va_list ap)

178 8a35f56c 2022-07-16 thomas {

179 8a35f56c 2022-07-16 thomas 	static char s[BUFSIZ];

180 8a35f56c 2022-07-16 thomas 	const char *sep;

181 8a35f56c 2022-07-16 thomas 

182 8a35f56c 2022-07-16 thomas 	if (emsg != NULL) {

183 8a35f56c 2022-07-16 thomas 		(void)vsnprintf(s, sizeof(s), emsg, ap);

184 8a35f56c 2022-07-16 thomas 		sep = ": ";

185 8a35f56c 2022-07-16 thomas 	} else {

186 8a35f56c 2022-07-16 thomas 		s[0] = '\0';

187 8a35f56c 2022-07-16 thomas 		sep = "";

188 8a35f56c 2022-07-16 thomas 	}

189 8a35f56c 2022-07-16 thomas 	if (code)

190 8a35f56c 2022-07-16 thomas 		logit(LOG_CRIT, "%s: %s%s%s",

191 8a35f56c 2022-07-16 thomas 		    log_procname, s, sep, strerror(code));

192 8a35f56c 2022-07-16 thomas 	else

193 8a35f56c 2022-07-16 thomas 		logit(LOG_CRIT, "%s%s%s", log_procname, sep, s);

194 8a35f56c 2022-07-16 thomas }

195 8a35f56c 2022-07-16 thomas 

196 8a35f56c 2022-07-16 thomas void

197 8a35f56c 2022-07-16 thomas fatal(const char *emsg, ...)

198 8a35f56c 2022-07-16 thomas {

199 8a35f56c 2022-07-16 thomas 	va_list ap;

200 8a35f56c 2022-07-16 thomas 

201 8a35f56c 2022-07-16 thomas 	va_start(ap, emsg);

202 8a35f56c 2022-07-16 thomas 	vfatalc(errno, emsg, ap);

203 8a35f56c 2022-07-16 thomas 	va_end(ap);

204 8a35f56c 2022-07-16 thomas 	exit(1);

205 8a35f56c 2022-07-16 thomas }

206 8a35f56c 2022-07-16 thomas 

207 8a35f56c 2022-07-16 thomas void

208 8a35f56c 2022-07-16 thomas fatalx(const char *emsg, ...)

209 8a35f56c 2022-07-16 thomas {

210 8a35f56c 2022-07-16 thomas 	va_list ap;

211 8a35f56c 2022-07-16 thomas 

212 8a35f56c 2022-07-16 thomas 	va_start(ap, emsg);

213 8a35f56c 2022-07-16 thomas 	vfatalc(0, emsg, ap);

214 8a35f56c 2022-07-16 thomas 	va_end(ap);

215 8a35f56c 2022-07-16 thomas 	exit(1);

216 8a35f56c 2022-07-16 thomas }