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Diffstat (limited to '')
| -rw-r--r-- | lib/log.c | 662 |
1 files changed, 662 insertions, 0 deletions
diff --git a/lib/log.c b/lib/log.c new file mode 100644 index 0000000..9548f26 --- /dev/null +++ b/lib/log.c @@ -0,0 +1,662 @@ +/* + * Logging of zebra + * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#define FRR_DEFINE_DESC_TABLE + +#include <zebra.h> + +#include "zclient.h" +#include "log.h" +#include "memory.h" +#include "command.h" +#include "lib_errors.h" +#include "lib/hook.h" +#include "printfrr.h" +#include "frr_pthread.h" + +#ifdef HAVE_LIBUNWIND +#define UNW_LOCAL_ONLY +#include <libunwind.h> +#include <dlfcn.h> +#endif + +/** + * Looks up a message in a message list by key. + * + * If the message is not found, returns the provided error message. + * + * Terminates when it hits a struct message that's all zeros. + * + * @param mz the message list + * @param kz the message key + * @param nf the message to return if not found + * @return the message + */ +const char *lookup_msg(const struct message *mz, int kz, const char *nf) +{ + static struct message nt = {0}; + const char *rz = nf ? nf : "(no message found)"; + const struct message *pnt; + for (pnt = mz; memcmp(pnt, &nt, sizeof(struct message)); pnt++) + if (pnt->key == kz) { + rz = pnt->str ? pnt->str : rz; + break; + } + return rz; +} + +/* For time string format. */ +size_t frr_timestamp(int timestamp_precision, char *buf, size_t buflen) +{ + static struct { + time_t last; + size_t len; + char buf[28]; + } cache; + struct timeval clock; + + gettimeofday(&clock, NULL); + + /* first, we update the cache if the time has changed */ + if (cache.last != clock.tv_sec) { + struct tm tm; + cache.last = clock.tv_sec; + localtime_r(&cache.last, &tm); + cache.len = strftime(cache.buf, sizeof(cache.buf), + "%Y/%m/%d %H:%M:%S", &tm); + } + /* note: it's not worth caching the subsecond part, because + chances are that back-to-back calls are not sufficiently close + together + for the clock not to have ticked forward */ + + if (buflen > cache.len) { + memcpy(buf, cache.buf, cache.len); + if ((timestamp_precision > 0) + && (buflen > cache.len + 1 + timestamp_precision)) { + /* should we worry about locale issues? */ + static const int divisor[] = {0, 100000, 10000, 1000, + 100, 10, 1}; + int prec; + char *p = buf + cache.len + 1 + + (prec = timestamp_precision); + *p-- = '\0'; + while (prec > 6) + /* this is unlikely to happen, but protect anyway */ + { + *p-- = '0'; + prec--; + } + clock.tv_usec /= divisor[prec]; + do { + *p-- = '0' + (clock.tv_usec % 10); + clock.tv_usec /= 10; + } while (--prec > 0); + *p = '.'; + return cache.len + 1 + timestamp_precision; + } + buf[cache.len] = '\0'; + return cache.len; + } + if (buflen > 0) + buf[0] = '\0'; + return 0; +} + +/* + * crash handling + * + * NB: only AS-Safe (async-signal) functions can be used here! + */ + +/* Note: the goal here is to use only async-signal-safe functions. */ +void zlog_signal(int signo, const char *action, void *siginfo_v, + void *program_counter) +{ + siginfo_t *siginfo = siginfo_v; + time_t now; + char buf[sizeof("DEFAULT: Received signal S at T (si_addr 0xP, PC 0xP); aborting...") + + 100]; + struct fbuf fb = { .buf = buf, .pos = buf, .len = sizeof(buf) }; + + time(&now); + + bprintfrr(&fb, "Received signal %d at %lld", signo, (long long)now); + if (program_counter) + bprintfrr(&fb, " (si_addr 0x%tx, PC 0x%tx)", + (ptrdiff_t)siginfo->si_addr, + (ptrdiff_t)program_counter); + else + bprintfrr(&fb, " (si_addr 0x%tx)", + (ptrdiff_t)siginfo->si_addr); + bprintfrr(&fb, "; %s\n", action); + + zlog_sigsafe(fb.buf, fb.pos - fb.buf); + + zlog_backtrace_sigsafe(LOG_CRIT, program_counter); + + fb.pos = buf; + + struct thread *tc; + tc = pthread_getspecific(thread_current); + + if (!tc) + bprintfrr(&fb, "no thread information available\n"); + else + bprintfrr(&fb, "in thread %s scheduled from %s:%d %s()\n", + tc->xref->funcname, tc->xref->xref.file, + tc->xref->xref.line, tc->xref->xref.func); + + zlog_sigsafe(fb.buf, fb.pos - fb.buf); +} + +/* Log a backtrace using only async-signal-safe functions. + Needs to be enhanced to support syslog logging. */ +void zlog_backtrace_sigsafe(int priority, void *program_counter) +{ +#ifdef HAVE_LIBUNWIND + char buf[256]; + struct fbuf fb = { .buf = buf, .len = sizeof(buf) }; + unw_cursor_t cursor; + unw_context_t uc; + unw_word_t ip, off, sp; + Dl_info dlinfo; + + memset(&uc, 0, sizeof(uc)); + memset(&cursor, 0, sizeof(cursor)); + + unw_getcontext(&uc); + unw_init_local(&cursor, &uc); + while (unw_step(&cursor) > 0) { + char name[128] = "?"; + + unw_get_reg(&cursor, UNW_REG_IP, &ip); + unw_get_reg(&cursor, UNW_REG_SP, &sp); + + if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off)) + snprintfrr(name, sizeof(name), "%s+%#lx", + buf, (long)off); + + fb.pos = buf; + if (unw_is_signal_frame(&cursor)) + bprintfrr(&fb, " ---- signal ----\n"); + bprintfrr(&fb, "%-30s %16lx %16lx", name, (long)ip, (long)sp); + if (dladdr((void *)ip, &dlinfo)) + bprintfrr(&fb, " %s (mapped at %p)", + dlinfo.dli_fname, dlinfo.dli_fbase); + bprintfrr(&fb, "\n"); + zlog_sigsafe(fb.buf, fb.pos - fb.buf); + } +#elif defined(HAVE_GLIBC_BACKTRACE) + void *array[64]; + int size, i; + char buf[128]; + struct fbuf fb = { .buf = buf, .pos = buf, .len = sizeof(buf) }; + char **bt = NULL; + + size = backtrace(array, array_size(array)); + if (size <= 0 || (size_t)size > array_size(array)) + return; + + bprintfrr(&fb, "Backtrace for %d stack frames:", size); + zlog_sigsafe(fb.pos, fb.buf - fb.pos); + + bt = backtrace_symbols(array, size); + + for (i = 0; i < size; i++) { + fb.pos = buf; + if (bt) + bprintfrr(&fb, "%s", bt[i]); + else + bprintfrr(&fb, "[bt %d] 0x%tx", i, + (ptrdiff_t)(array[i])); + zlog_sigsafe(fb.buf, fb.pos - fb.buf); + } + if (bt) + free(bt); +#endif /* HAVE_STRACK_TRACE */ +} + +void zlog_backtrace(int priority) +{ +#ifdef HAVE_LIBUNWIND + char buf[100]; + unw_cursor_t cursor = {}; + unw_context_t uc; + unw_word_t ip, off, sp; + Dl_info dlinfo; + + unw_getcontext(&uc); + unw_init_local(&cursor, &uc); + zlog(priority, "Backtrace:"); + while (unw_step(&cursor) > 0) { + char name[128] = "?"; + + unw_get_reg(&cursor, UNW_REG_IP, &ip); + unw_get_reg(&cursor, UNW_REG_SP, &sp); + + if (unw_is_signal_frame(&cursor)) + zlog(priority, " ---- signal ----"); + + if (!unw_get_proc_name(&cursor, buf, sizeof(buf), &off)) + snprintf(name, sizeof(name), "%s+%#lx", + buf, (long)off); + + if (dladdr((void *)ip, &dlinfo)) + zlog(priority, "%-30s %16lx %16lx %s (mapped at %p)", + name, (long)ip, (long)sp, + dlinfo.dli_fname, dlinfo.dli_fbase); + else + zlog(priority, "%-30s %16lx %16lx", + name, (long)ip, (long)sp); + } +#elif defined(HAVE_GLIBC_BACKTRACE) + void *array[20]; + int size, i; + char **strings; + + size = backtrace(array, array_size(array)); + if (size <= 0 || (size_t)size > array_size(array)) { + flog_err_sys( + EC_LIB_SYSTEM_CALL, + "Cannot get backtrace, returned invalid # of frames %d (valid range is between 1 and %lu)", + size, (unsigned long)(array_size(array))); + return; + } + zlog(priority, "Backtrace for %d stack frames:", size); + if (!(strings = backtrace_symbols(array, size))) { + flog_err_sys(EC_LIB_SYSTEM_CALL, + "Cannot get backtrace symbols (out of memory?)"); + for (i = 0; i < size; i++) + zlog(priority, "[bt %d] %p", i, array[i]); + } else { + for (i = 0; i < size; i++) + zlog(priority, "[bt %d] %s", i, strings[i]); + free(strings); + } +#else /* !HAVE_GLIBC_BACKTRACE && !HAVE_LIBUNWIND */ + zlog(priority, "No backtrace available on this platform."); +#endif +} + +void zlog_thread_info(int log_level) +{ + struct thread *tc; + tc = pthread_getspecific(thread_current); + + if (tc) + zlog(log_level, + "Current thread function %s, scheduled from file %s, line %u in %s()", + tc->xref->funcname, tc->xref->xref.file, + tc->xref->xref.line, tc->xref->xref.func); + else + zlog(log_level, "Current thread not known/applicable"); +} + +void memory_oom(size_t size, const char *name) +{ + zlog(LOG_CRIT, + "out of memory: failed to allocate %zu bytes for %s object", + size, name); + zlog_backtrace(LOG_CRIT); + log_memstats(stderr, "log"); + abort(); +} + +/* Wrapper around strerror to handle case where it returns NULL. */ +const char *safe_strerror(int errnum) +{ + const char *s = strerror(errnum); + return (s != NULL) ? s : "Unknown error"; +} + +#define DESC_ENTRY(T) [(T)] = { (T), (#T), '\0' } +static const struct zebra_desc_table command_types[] = { + DESC_ENTRY(ZEBRA_INTERFACE_ADD), + DESC_ENTRY(ZEBRA_INTERFACE_DELETE), + DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_ADD), + DESC_ENTRY(ZEBRA_INTERFACE_ADDRESS_DELETE), + DESC_ENTRY(ZEBRA_INTERFACE_UP), + DESC_ENTRY(ZEBRA_INTERFACE_DOWN), + DESC_ENTRY(ZEBRA_INTERFACE_SET_MASTER), + DESC_ENTRY(ZEBRA_ROUTE_ADD), + DESC_ENTRY(ZEBRA_ROUTE_DELETE), + DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_OWNER), + DESC_ENTRY(ZEBRA_REDISTRIBUTE_ADD), + DESC_ENTRY(ZEBRA_REDISTRIBUTE_DELETE), + DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_ADD), + DESC_ENTRY(ZEBRA_REDISTRIBUTE_DEFAULT_DELETE), + DESC_ENTRY(ZEBRA_ROUTER_ID_ADD), + DESC_ENTRY(ZEBRA_ROUTER_ID_DELETE), + DESC_ENTRY(ZEBRA_ROUTER_ID_UPDATE), + DESC_ENTRY(ZEBRA_HELLO), + DESC_ENTRY(ZEBRA_CAPABILITIES), + DESC_ENTRY(ZEBRA_NEXTHOP_REGISTER), + DESC_ENTRY(ZEBRA_NEXTHOP_UNREGISTER), + DESC_ENTRY(ZEBRA_NEXTHOP_UPDATE), + DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_ADD), + DESC_ENTRY(ZEBRA_INTERFACE_NBR_ADDRESS_DELETE), + DESC_ENTRY(ZEBRA_INTERFACE_BFD_DEST_UPDATE), + DESC_ENTRY(ZEBRA_BFD_DEST_REGISTER), + DESC_ENTRY(ZEBRA_BFD_DEST_DEREGISTER), + DESC_ENTRY(ZEBRA_BFD_DEST_UPDATE), + DESC_ENTRY(ZEBRA_BFD_DEST_REPLAY), + DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_ADD), + DESC_ENTRY(ZEBRA_REDISTRIBUTE_ROUTE_DEL), + DESC_ENTRY(ZEBRA_VRF_UNREGISTER), + DESC_ENTRY(ZEBRA_VRF_ADD), + DESC_ENTRY(ZEBRA_VRF_DELETE), + DESC_ENTRY(ZEBRA_VRF_LABEL), + DESC_ENTRY(ZEBRA_INTERFACE_VRF_UPDATE), + DESC_ENTRY(ZEBRA_BFD_CLIENT_REGISTER), + DESC_ENTRY(ZEBRA_BFD_CLIENT_DEREGISTER), + DESC_ENTRY(ZEBRA_INTERFACE_ENABLE_RADV), + DESC_ENTRY(ZEBRA_INTERFACE_DISABLE_RADV), + DESC_ENTRY(ZEBRA_NEXTHOP_LOOKUP_MRIB), + DESC_ENTRY(ZEBRA_INTERFACE_LINK_PARAMS), + DESC_ENTRY(ZEBRA_MPLS_LABELS_ADD), + DESC_ENTRY(ZEBRA_MPLS_LABELS_DELETE), + DESC_ENTRY(ZEBRA_MPLS_LABELS_REPLACE), + DESC_ENTRY(ZEBRA_SR_POLICY_SET), + DESC_ENTRY(ZEBRA_SR_POLICY_DELETE), + DESC_ENTRY(ZEBRA_SR_POLICY_NOTIFY_STATUS), + DESC_ENTRY(ZEBRA_IPMR_ROUTE_STATS), + DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT), + DESC_ENTRY(ZEBRA_LABEL_MANAGER_CONNECT_ASYNC), + DESC_ENTRY(ZEBRA_GET_LABEL_CHUNK), + DESC_ENTRY(ZEBRA_RELEASE_LABEL_CHUNK), + DESC_ENTRY(ZEBRA_FEC_REGISTER), + DESC_ENTRY(ZEBRA_FEC_UNREGISTER), + DESC_ENTRY(ZEBRA_FEC_UPDATE), + DESC_ENTRY(ZEBRA_ADVERTISE_ALL_VNI), + DESC_ENTRY(ZEBRA_ADVERTISE_DEFAULT_GW), + DESC_ENTRY(ZEBRA_ADVERTISE_SVI_MACIP), + DESC_ENTRY(ZEBRA_ADVERTISE_SUBNET), + DESC_ENTRY(ZEBRA_LOCAL_ES_ADD), + DESC_ENTRY(ZEBRA_LOCAL_ES_DEL), + DESC_ENTRY(ZEBRA_REMOTE_ES_VTEP_ADD), + DESC_ENTRY(ZEBRA_REMOTE_ES_VTEP_DEL), + DESC_ENTRY(ZEBRA_LOCAL_ES_EVI_ADD), + DESC_ENTRY(ZEBRA_LOCAL_ES_EVI_DEL), + DESC_ENTRY(ZEBRA_VNI_ADD), + DESC_ENTRY(ZEBRA_VNI_DEL), + DESC_ENTRY(ZEBRA_L3VNI_ADD), + DESC_ENTRY(ZEBRA_L3VNI_DEL), + DESC_ENTRY(ZEBRA_REMOTE_VTEP_ADD), + DESC_ENTRY(ZEBRA_REMOTE_VTEP_DEL), + DESC_ENTRY(ZEBRA_MACIP_ADD), + DESC_ENTRY(ZEBRA_MACIP_DEL), + DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_ADD), + DESC_ENTRY(ZEBRA_IP_PREFIX_ROUTE_DEL), + DESC_ENTRY(ZEBRA_REMOTE_MACIP_ADD), + DESC_ENTRY(ZEBRA_REMOTE_MACIP_DEL), + DESC_ENTRY(ZEBRA_DUPLICATE_ADDR_DETECTION), + DESC_ENTRY(ZEBRA_PW_ADD), + DESC_ENTRY(ZEBRA_PW_DELETE), + DESC_ENTRY(ZEBRA_PW_SET), + DESC_ENTRY(ZEBRA_PW_UNSET), + DESC_ENTRY(ZEBRA_PW_STATUS_UPDATE), + DESC_ENTRY(ZEBRA_RULE_ADD), + DESC_ENTRY(ZEBRA_RULE_DELETE), + DESC_ENTRY(ZEBRA_RULE_NOTIFY_OWNER), + DESC_ENTRY(ZEBRA_TABLE_MANAGER_CONNECT), + DESC_ENTRY(ZEBRA_GET_TABLE_CHUNK), + DESC_ENTRY(ZEBRA_RELEASE_TABLE_CHUNK), + DESC_ENTRY(ZEBRA_IPSET_CREATE), + DESC_ENTRY(ZEBRA_IPSET_DESTROY), + DESC_ENTRY(ZEBRA_IPSET_ENTRY_ADD), + DESC_ENTRY(ZEBRA_IPSET_ENTRY_DELETE), + DESC_ENTRY(ZEBRA_IPSET_NOTIFY_OWNER), + DESC_ENTRY(ZEBRA_IPSET_ENTRY_NOTIFY_OWNER), + DESC_ENTRY(ZEBRA_IPTABLE_ADD), + DESC_ENTRY(ZEBRA_IPTABLE_DELETE), + DESC_ENTRY(ZEBRA_IPTABLE_NOTIFY_OWNER), + DESC_ENTRY(ZEBRA_VXLAN_FLOOD_CONTROL), + DESC_ENTRY(ZEBRA_VXLAN_SG_ADD), + DESC_ENTRY(ZEBRA_VXLAN_SG_DEL), + DESC_ENTRY(ZEBRA_VXLAN_SG_REPLAY), + DESC_ENTRY(ZEBRA_MLAG_PROCESS_UP), + DESC_ENTRY(ZEBRA_MLAG_PROCESS_DOWN), + DESC_ENTRY(ZEBRA_MLAG_CLIENT_REGISTER), + DESC_ENTRY(ZEBRA_MLAG_CLIENT_UNREGISTER), + DESC_ENTRY(ZEBRA_MLAG_FORWARD_MSG), + DESC_ENTRY(ZEBRA_ERROR), + DESC_ENTRY(ZEBRA_CLIENT_CAPABILITIES), + DESC_ENTRY(ZEBRA_OPAQUE_MESSAGE), + DESC_ENTRY(ZEBRA_OPAQUE_REGISTER), + DESC_ENTRY(ZEBRA_OPAQUE_UNREGISTER), + DESC_ENTRY(ZEBRA_NEIGH_DISCOVER), + DESC_ENTRY(ZEBRA_NHG_ADD), + DESC_ENTRY(ZEBRA_NHG_DEL), + DESC_ENTRY(ZEBRA_NHG_NOTIFY_OWNER), + DESC_ENTRY(ZEBRA_ROUTE_NOTIFY_REQUEST), + DESC_ENTRY(ZEBRA_CLIENT_CLOSE_NOTIFY), + DESC_ENTRY(ZEBRA_EVPN_REMOTE_NH_ADD), + DESC_ENTRY(ZEBRA_EVPN_REMOTE_NH_DEL), + DESC_ENTRY(ZEBRA_NHRP_NEIGH_ADDED), + DESC_ENTRY(ZEBRA_NHRP_NEIGH_REMOVED), + DESC_ENTRY(ZEBRA_NHRP_NEIGH_GET), + DESC_ENTRY(ZEBRA_NHRP_NEIGH_REGISTER), + DESC_ENTRY(ZEBRA_NHRP_NEIGH_UNREGISTER), + DESC_ENTRY(ZEBRA_NEIGH_IP_ADD), + DESC_ENTRY(ZEBRA_NEIGH_IP_DEL), + DESC_ENTRY(ZEBRA_CONFIGURE_ARP), + DESC_ENTRY(ZEBRA_GRE_GET), + DESC_ENTRY(ZEBRA_GRE_UPDATE), + DESC_ENTRY(ZEBRA_GRE_SOURCE_SET)}; +#undef DESC_ENTRY + +static const struct zebra_desc_table unknown = {0, "unknown", '?'}; + +static const struct zebra_desc_table *zroute_lookup(unsigned int zroute) +{ + unsigned int i; + + if (zroute >= array_size(route_types)) { + flog_err(EC_LIB_DEVELOPMENT, "unknown zebra route type: %u", + zroute); + return &unknown; + } + if (zroute == route_types[zroute].type) + return &route_types[zroute]; + for (i = 0; i < array_size(route_types); i++) { + if (zroute == route_types[i].type) { + zlog_warn( + "internal error: route type table out of order while searching for %u, please notify developers", + zroute); + return &route_types[i]; + } + } + flog_err(EC_LIB_DEVELOPMENT, + "internal error: cannot find route type %u in table!", zroute); + return &unknown; +} + +const char *zebra_route_string(unsigned int zroute) +{ + return zroute_lookup(zroute)->string; +} + +char zebra_route_char(unsigned int zroute) +{ + return zroute_lookup(zroute)->chr; +} + +const char *zserv_command_string(unsigned int command) +{ + if (command >= array_size(command_types)) { + flog_err(EC_LIB_DEVELOPMENT, "unknown zserv command type: %u", + command); + return unknown.string; + } + return command_types[command].string; +} + +int proto_name2num(const char *s) +{ + unsigned i; + + for (i = 0; i < array_size(route_types); ++i) + if (strcasecmp(s, route_types[i].string) == 0) + return route_types[i].type; + return -1; +} + +int proto_redistnum(int afi, const char *s) +{ + if (!s) + return -1; + + if (afi == AFI_IP) { + if (strmatch(s, "kernel")) + return ZEBRA_ROUTE_KERNEL; + else if (strmatch(s, "connected")) + return ZEBRA_ROUTE_CONNECT; + else if (strmatch(s, "static")) + return ZEBRA_ROUTE_STATIC; + else if (strmatch(s, "rip")) + return ZEBRA_ROUTE_RIP; + else if (strmatch(s, "eigrp")) + return ZEBRA_ROUTE_EIGRP; + else if (strmatch(s, "ospf")) + return ZEBRA_ROUTE_OSPF; + else if (strmatch(s, "isis")) + return ZEBRA_ROUTE_ISIS; + else if (strmatch(s, "bgp")) + return ZEBRA_ROUTE_BGP; + else if (strmatch(s, "table")) + return ZEBRA_ROUTE_TABLE; + else if (strmatch(s, "vnc")) + return ZEBRA_ROUTE_VNC; + else if (strmatch(s, "vnc-direct")) + return ZEBRA_ROUTE_VNC_DIRECT; + else if (strmatch(s, "nhrp")) + return ZEBRA_ROUTE_NHRP; + else if (strmatch(s, "babel")) + return ZEBRA_ROUTE_BABEL; + else if (strmatch(s, "sharp")) + return ZEBRA_ROUTE_SHARP; + else if (strmatch(s, "openfabric")) + return ZEBRA_ROUTE_OPENFABRIC; + } + if (afi == AFI_IP6) { + if (strmatch(s, "kernel")) + return ZEBRA_ROUTE_KERNEL; + else if (strmatch(s, "connected")) + return ZEBRA_ROUTE_CONNECT; + else if (strmatch(s, "static")) + return ZEBRA_ROUTE_STATIC; + else if (strmatch(s, "ripng")) + return ZEBRA_ROUTE_RIPNG; + else if (strmatch(s, "ospf6")) + return ZEBRA_ROUTE_OSPF6; + else if (strmatch(s, "isis")) + return ZEBRA_ROUTE_ISIS; + else if (strmatch(s, "bgp")) + return ZEBRA_ROUTE_BGP; + else if (strmatch(s, "table")) + return ZEBRA_ROUTE_TABLE; + else if (strmatch(s, "vnc")) + return ZEBRA_ROUTE_VNC; + else if (strmatch(s, "vnc-direct")) + return ZEBRA_ROUTE_VNC_DIRECT; + else if (strmatch(s, "nhrp")) + return ZEBRA_ROUTE_NHRP; + else if (strmatch(s, "babel")) + return ZEBRA_ROUTE_BABEL; + else if (strmatch(s, "sharp")) + return ZEBRA_ROUTE_SHARP; + else if (strmatch(s, "openfabric")) + return ZEBRA_ROUTE_OPENFABRIC; + } + return -1; +} + +void zlog_hexdump(const void *mem, size_t len) +{ + char line[64]; + const uint8_t *src = mem; + const uint8_t *end = src + len; + + if (len == 0) { + zlog_debug("%016lx: (zero length / no data)", (long)src); + return; + } + + while (src < end) { + struct fbuf fb = { + .buf = line, + .pos = line, + .len = sizeof(line), + }; + const uint8_t *lineend = src + 8; + unsigned line_bytes = 0; + + bprintfrr(&fb, "%016lx: ", (long)src); + + while (src < lineend && src < end) { + bprintfrr(&fb, "%02x ", *src++); + line_bytes++; + } + if (line_bytes < 8) + bprintfrr(&fb, "%*s", (8 - line_bytes) * 3, ""); + + src -= line_bytes; + while (src < lineend && src < end && fb.pos < fb.buf + fb.len) { + uint8_t byte = *src++; + + if (isprint(byte)) + *fb.pos++ = byte; + else + *fb.pos++ = '.'; + } + + zlog_debug("%.*s", (int)(fb.pos - fb.buf), fb.buf); + } +} + +const char *zlog_sanitize(char *buf, size_t bufsz, const void *in, size_t inlen) +{ + const char *inbuf = in; + char *pos = buf, *end = buf + bufsz; + const char *iend = inbuf + inlen; + + memset(buf, 0, bufsz); + for (; inbuf < iend; inbuf++) { + /* don't write partial escape sequence */ + if (end - pos < 5) + break; + + if (*inbuf == '\n') + snprintf(pos, end - pos, "\\n"); + else if (*inbuf == '\r') + snprintf(pos, end - pos, "\\r"); + else if (*inbuf == '\t') + snprintf(pos, end - pos, "\\t"); + else if (*inbuf < ' ' || *inbuf == '"' || *inbuf >= 127) + snprintf(pos, end - pos, "\\x%02hhx", *inbuf); + else + *pos = *inbuf; + + pos += strlen(pos); + } + return buf; +} |