Author: gd Date: 2007-11-02 11:33:53 +0000 (Fri, 02 Nov 2007) New Revision: 25799
WebSVN: http://websvn.samba.org/cgi-bin/viewcvs.cgi?view=rev&root=samba&rev=25799 Log: Add dump_data_skip_zeros() which omits 16 zero bytes in a row (if not at the beginning or the end of a blob). Usefull when inspecting protocols that exchange huge mostly empty blobs. Guenther Modified: branches/SAMBA_4_0/source/lib/util/util.c branches/SAMBA_4_0/source/lib/util/util.h Changeset: Modified: branches/SAMBA_4_0/source/lib/util/util.c =================================================================== --- branches/SAMBA_4_0/source/lib/util/util.c 2007-11-02 11:01:18 UTC (rev 25798) +++ branches/SAMBA_4_0/source/lib/util/util.c 2007-11-02 11:33:53 UTC (rev 25799) @@ -393,24 +393,55 @@ * * The data is only written if the log level is at least level. */ -_PUBLIC_ void dump_data(int level, const uint8_t *buf,int len) +static void _dump_data(int level, const uint8_t *buf, int len, + bool omit_zero_bytes) { int i=0; + const uint8_t empty[16]; + bool skipped = false; + if (len<=0) return; if (!DEBUGLVL(level)) return; - - DEBUGADD(level,("[%03X] ",i)); + + memset(&empty, '\0', 16); + for (i=0;i<len;) { + + if (i%16 == 0) { + if ((omit_zero_bytes == true) && + (i > 0) && + (len > i+16) && + (memcmp(&buf[i], &empty, 16) == 0)) + { + i +=16; + continue; + } + + if (i<len) { + DEBUGADD(level,("[%04X] ",i)); + } + } + DEBUGADD(level,("%02X ",(int)buf[i])); i++; - if (i%8 == 0) DEBUGADD(level,(" ")); - if (i%16 == 0) { + if (i%8 == 0) DEBUGADD(level,(" ")); + if (i%16 == 0) { + print_asc(level,&buf[i-16],8); DEBUGADD(level,(" ")); print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n")); - if (i<len) DEBUGADD(level,("[%03X] ",i)); + + if ((omit_zero_bytes == true) && + (len > i+16) && + (memcmp(&buf[i], &empty, 16) == 0)) { + if (!skipped) { + DEBUGADD(level,("skipping zero buffer bytes\n")); + skipped = true; + } + } } } + if (i%16) { int n; n = 16 - (i%16); @@ -420,12 +451,35 @@ n = MIN(8,i%16); print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " )); n = (i%16) - n; - if (n>0) print_asc(level,&buf[i-n],n); - DEBUGADD(level,("\n")); - } + if (n>0) print_asc(level,&buf[i-n],n); + DEBUGADD(level,("\n")); + } + } /** + * Write dump of binary data to the log file. + * + * The data is only written if the log level is at least level. + */ +_PUBLIC_ void dump_data(int level, const uint8_t *buf, int len) +{ + return _dump_data(level, buf, len, false); +} + +/** + * Write dump of binary data to the log file. + * + * The data is only written if the log level is at least level. + * 16 zero bytes in a row are ommited + */ +_PUBLIC_ void dump_data_skip_zeros(int level, const uint8_t *buf, int len) +{ + return _dump_data(level, buf, len, true); +} + + +/** malloc that aborts with smb_panic on fail or zero size. **/ Modified: branches/SAMBA_4_0/source/lib/util/util.h =================================================================== --- branches/SAMBA_4_0/source/lib/util/util.h 2007-11-02 11:01:18 UTC (rev 25798) +++ branches/SAMBA_4_0/source/lib/util/util.h 2007-11-02 11:33:53 UTC (rev 25799) @@ -656,6 +656,14 @@ _PUBLIC_ void dump_data(int level, const uint8_t *buf,int len); /** + * Write dump of binary data to the log file. + * + * The data is only written if the log level is at least level. + * 16 zero bytes in a row are ommited + */ +_PUBLIC_ void dump_data_skip_zeros(int level, const uint8_t *buf, int len); + +/** malloc that aborts with smb_panic on fail or zero size. **/ _PUBLIC_ void *smb_xmalloc(size_t size);
