2 * "$Id: statbuf.c 11173 2013-07-23 12:31:34Z msweet $"
4 * Status buffer routines for the CUPS scheduler.
6 * Copyright 2007-2010 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 * cupsdStatBufDelete() - Destroy a status buffer.
18 * cupsdStatBufNew() - Create a new status buffer.
19 * cupsdStatBufUpdate() - Update the status buffer.
23 * Include necessary headers...
31 * 'cupsdStatBufDelete()' - Destroy a status buffer.
35 cupsdStatBufDelete(cupsd_statbuf_t *sb) /* I - Status buffer */
38 * Range check input...
45 * Close the status pipe and free memory used...
55 * 'cupsdStatBufNew()' - Create a new status buffer.
58 cupsd_statbuf_t * /* O - New status buffer */
59 cupsdStatBufNew(int fd, /* I - File descriptor of pipe */
60 const char *prefix, /* I - Printf-style prefix string */
61 ...) /* I - Additional args as needed */
63 cupsd_statbuf_t *sb; /* New status buffer */
64 va_list ap; /* Argument list */
68 * Range check input...
75 * Allocate the status buffer...
78 if ((sb = calloc(1, sizeof(cupsd_statbuf_t))) != NULL)
81 * Assign the file descriptor...
87 * Format the prefix string, if any. This is usually "[Job 123]"
88 * or "[Sub 123]", and so forth.
94 * Printf-style prefix string...
98 vsnprintf(sb->prefix, sizeof(sb->prefix), prefix, ap);
104 * No prefix string...
107 sb->prefix[0] = '\0';
116 * 'cupsdStatBufUpdate()' - Update the status buffer.
119 char * /* O - Line from buffer, "", or NULL */
121 cupsd_statbuf_t *sb, /* I - Status buffer */
122 int *loglevel, /* O - Log level */
123 char *line, /* I - Line buffer */
124 int linelen) /* I - Size of line buffer */
126 int bytes; /* Number of bytes read */
127 char *lineptr, /* Pointer to end of line in buffer */
128 *message; /* Pointer to message text */
132 * Check if the buffer already contains a full line...
135 if ((lineptr = strchr(sb->buffer, '\n')) == NULL)
138 * No, read more data...
141 if ((bytes = read(sb->fd, sb->buffer + sb->bufused,
142 CUPSD_SB_BUFFER_SIZE - sb->bufused - 1)) > 0)
144 sb->bufused += bytes;
145 sb->buffer[sb->bufused] = '\0';
148 * Guard against a line longer than the max buffer size...
151 if ((lineptr = strchr(sb->buffer, '\n')) == NULL &&
152 sb->bufused == (CUPSD_SB_BUFFER_SIZE - 1))
153 lineptr = sb->buffer + sb->bufused;
155 else if (bytes < 0 && errno == EINTR)
158 * Return an empty line if we are interrupted...
161 *loglevel = CUPSD_LOG_NONE;
169 * End-of-file, so use the whole buffer...
172 lineptr = sb->buffer + sb->bufused;
177 * Final check for end-of-file...
180 if (sb->bufused == 0 && bytes == 0)
190 *loglevel = CUPSD_LOG_NONE;
197 * Terminate the line and process it...
203 * Figure out the logging level...
206 if (!strncmp(sb->buffer, "EMERG:", 6))
208 *loglevel = CUPSD_LOG_EMERG;
209 message = sb->buffer + 6;
211 else if (!strncmp(sb->buffer, "ALERT:", 6))
213 *loglevel = CUPSD_LOG_ALERT;
214 message = sb->buffer + 6;
216 else if (!strncmp(sb->buffer, "CRIT:", 5))
218 *loglevel = CUPSD_LOG_CRIT;
219 message = sb->buffer + 5;
221 else if (!strncmp(sb->buffer, "ERROR:", 6))
223 *loglevel = CUPSD_LOG_ERROR;
224 message = sb->buffer + 6;
226 else if (!strncmp(sb->buffer, "WARNING:", 8))
228 *loglevel = CUPSD_LOG_WARN;
229 message = sb->buffer + 8;
231 else if (!strncmp(sb->buffer, "NOTICE:", 7))
233 *loglevel = CUPSD_LOG_NOTICE;
234 message = sb->buffer + 7;
236 else if (!strncmp(sb->buffer, "INFO:", 5))
238 *loglevel = CUPSD_LOG_INFO;
239 message = sb->buffer + 5;
241 else if (!strncmp(sb->buffer, "DEBUG:", 6))
243 *loglevel = CUPSD_LOG_DEBUG;
244 message = sb->buffer + 6;
246 else if (!strncmp(sb->buffer, "DEBUG2:", 7))
248 *loglevel = CUPSD_LOG_DEBUG2;
249 message = sb->buffer + 7;
251 else if (!strncmp(sb->buffer, "PAGE:", 5))
253 *loglevel = CUPSD_LOG_PAGE;
254 message = sb->buffer + 5;
256 else if (!strncmp(sb->buffer, "STATE:", 6))
258 *loglevel = CUPSD_LOG_STATE;
259 message = sb->buffer + 6;
261 else if (!strncmp(sb->buffer, "ATTR:", 5))
263 *loglevel = CUPSD_LOG_ATTR;
264 message = sb->buffer + 5;
266 else if (!strncmp(sb->buffer, "PPD:", 4))
268 *loglevel = CUPSD_LOG_PPD;
269 message = sb->buffer + 4;
273 *loglevel = CUPSD_LOG_DEBUG;
274 message = sb->buffer;
278 * Skip leading whitespace in the message...
281 while (isspace(*message & 255))
285 * Send it to the log file as needed...
290 if (*loglevel > CUPSD_LOG_NONE &&
291 (*loglevel != CUPSD_LOG_INFO || LogLevel >= CUPSD_LOG_DEBUG))
294 * General status message; send it to the error_log file...
297 if (message[0] == '[')
298 cupsdLogMessage(*loglevel, "%s", message);
300 cupsdLogMessage(*loglevel, "%s %s", sb->prefix, message);
302 else if (*loglevel < CUPSD_LOG_NONE && LogLevel >= CUPSD_LOG_DEBUG)
303 cupsdLogMessage(CUPSD_LOG_DEBUG2, "%s %s", sb->prefix, sb->buffer);
307 * Copy the message to the line buffer...
310 strlcpy(line, message, linelen);
313 * Copy over the buffer data we've used up...
316 if (lineptr < sb->buffer + sb->bufused)
317 _cups_strcpy(sb->buffer, lineptr);
319 sb->bufused -= lineptr - sb->buffer;
329 * End of "$Id: statbuf.c 11173 2013-07-23 12:31:34Z msweet $".