2 * "$Id: statbuf.c 11594 2014-02-14 20:09:01Z msweet $"
4 * Status buffer routines for the CUPS scheduler.
6 * Copyright 2007-2014 by Apple Inc.
7 * Copyright 1997-2006 by Easy Software Products, all rights reserved.
9 * These coded instructions, statements, and computer programs are the
10 * property of Apple Inc. and are protected by Federal copyright
11 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
12 * which should have been included with this file. If this file is
13 * file is missing or damaged, see the license at "http://www.cups.org/".
17 * Include necessary headers...
25 * 'cupsdStatBufDelete()' - Destroy a status buffer.
29 cupsdStatBufDelete(cupsd_statbuf_t *sb) /* I - Status buffer */
32 * Range check input...
39 * Close the status pipe and free memory used...
49 * 'cupsdStatBufNew()' - Create a new status buffer.
52 cupsd_statbuf_t * /* O - New status buffer */
53 cupsdStatBufNew(int fd, /* I - File descriptor of pipe */
54 const char *prefix, /* I - Printf-style prefix string */
55 ...) /* I - Additional args as needed */
57 cupsd_statbuf_t *sb; /* New status buffer */
58 va_list ap; /* Argument list */
62 * Range check input...
69 * Allocate the status buffer...
72 if ((sb = calloc(1, sizeof(cupsd_statbuf_t))) != NULL)
75 * Assign the file descriptor...
81 * Format the prefix string, if any. This is usually "[Job 123]"
82 * or "[Sub 123]", and so forth.
88 * Printf-style prefix string...
92 vsnprintf(sb->prefix, sizeof(sb->prefix), prefix, ap);
101 sb->prefix[0] = '\0';
110 * 'cupsdStatBufUpdate()' - Update the status buffer.
113 char * /* O - Line from buffer, "", or NULL */
115 cupsd_statbuf_t *sb, /* I - Status buffer */
116 int *loglevel, /* O - Log level */
117 char *line, /* I - Line buffer */
118 int linelen) /* I - Size of line buffer */
120 int bytes; /* Number of bytes read */
121 char *lineptr, /* Pointer to end of line in buffer */
122 *message; /* Pointer to message text */
126 * Check if the buffer already contains a full line...
129 if ((lineptr = strchr(sb->buffer, '\n')) == NULL)
132 * No, read more data...
135 if ((bytes = read(sb->fd, sb->buffer + sb->bufused, (size_t)(CUPSD_SB_BUFFER_SIZE - sb->bufused - 1))) > 0)
137 sb->bufused += bytes;
138 sb->buffer[sb->bufused] = '\0';
141 * Guard against a line longer than the max buffer size...
144 if ((lineptr = strchr(sb->buffer, '\n')) == NULL &&
145 sb->bufused == (CUPSD_SB_BUFFER_SIZE - 1))
146 lineptr = sb->buffer + sb->bufused;
148 else if (bytes < 0 && errno == EINTR)
151 * Return an empty line if we are interrupted...
154 *loglevel = CUPSD_LOG_NONE;
162 * End-of-file, so use the whole buffer...
165 lineptr = sb->buffer + sb->bufused;
170 * Final check for end-of-file...
173 if (sb->bufused == 0 && bytes == 0)
183 *loglevel = CUPSD_LOG_NONE;
190 * Terminate the line and process it...
196 * Figure out the logging level...
199 if (!strncmp(sb->buffer, "EMERG:", 6))
201 *loglevel = CUPSD_LOG_EMERG;
202 message = sb->buffer + 6;
204 else if (!strncmp(sb->buffer, "ALERT:", 6))
206 *loglevel = CUPSD_LOG_ALERT;
207 message = sb->buffer + 6;
209 else if (!strncmp(sb->buffer, "CRIT:", 5))
211 *loglevel = CUPSD_LOG_CRIT;
212 message = sb->buffer + 5;
214 else if (!strncmp(sb->buffer, "ERROR:", 6))
216 *loglevel = CUPSD_LOG_ERROR;
217 message = sb->buffer + 6;
219 else if (!strncmp(sb->buffer, "WARNING:", 8))
221 *loglevel = CUPSD_LOG_WARN;
222 message = sb->buffer + 8;
224 else if (!strncmp(sb->buffer, "NOTICE:", 7))
226 *loglevel = CUPSD_LOG_NOTICE;
227 message = sb->buffer + 7;
229 else if (!strncmp(sb->buffer, "INFO:", 5))
231 *loglevel = CUPSD_LOG_INFO;
232 message = sb->buffer + 5;
234 else if (!strncmp(sb->buffer, "DEBUG:", 6))
236 *loglevel = CUPSD_LOG_DEBUG;
237 message = sb->buffer + 6;
239 else if (!strncmp(sb->buffer, "DEBUG2:", 7))
241 *loglevel = CUPSD_LOG_DEBUG2;
242 message = sb->buffer + 7;
244 else if (!strncmp(sb->buffer, "PAGE:", 5))
246 *loglevel = CUPSD_LOG_PAGE;
247 message = sb->buffer + 5;
249 else if (!strncmp(sb->buffer, "STATE:", 6))
251 *loglevel = CUPSD_LOG_STATE;
252 message = sb->buffer + 6;
254 else if (!strncmp(sb->buffer, "JOBSTATE:", 9))
256 *loglevel = CUPSD_LOG_JOBSTATE;
257 message = sb->buffer + 9;
259 else if (!strncmp(sb->buffer, "ATTR:", 5))
261 *loglevel = CUPSD_LOG_ATTR;
262 message = sb->buffer + 5;
264 else if (!strncmp(sb->buffer, "PPD:", 4))
266 *loglevel = CUPSD_LOG_PPD;
267 message = sb->buffer + 4;
271 *loglevel = CUPSD_LOG_DEBUG;
272 message = sb->buffer;
276 * Skip leading whitespace in the message...
279 while (isspace(*message & 255))
283 * Send it to the log file as needed...
288 if (*loglevel > CUPSD_LOG_NONE &&
289 (*loglevel != CUPSD_LOG_INFO || LogLevel >= CUPSD_LOG_DEBUG))
292 * General status message; send it to the error_log file...
295 if (message[0] == '[')
296 cupsdLogMessage(*loglevel, "%s", message);
298 cupsdLogMessage(*loglevel, "%s %s", sb->prefix, message);
300 else if (*loglevel < CUPSD_LOG_NONE && LogLevel >= CUPSD_LOG_DEBUG)
301 cupsdLogMessage(CUPSD_LOG_DEBUG2, "%s %s", sb->prefix, sb->buffer);
305 * Copy the message to the line buffer...
308 strlcpy(line, message, (size_t)linelen);
311 * Copy over the buffer data we've used up...
314 if (lineptr < sb->buffer + sb->bufused)
315 _cups_strcpy(sb->buffer, lineptr);
317 sb->bufused -= lineptr - sb->buffer;
327 * End of "$Id: statbuf.c 11594 2014-02-14 20:09:01Z msweet $".