#include <ctype.h>
#include <sys/file.h>
#include <fcntl.h>
-#include <signal.h>
#define FR_PUT_LE16(a, val)\
do {\
a[0] = ((uint16_t) (val)) & 0xff;\
} while (0)
-static int fr_debugger_present = -1;
+#ifdef HAVE_PTHREAD_H
+# define PTHREAD_MUTEX_LOCK pthread_mutex_lock
+# define PTHREAD_MUTEX_UNLOCK pthread_mutex_unlock
+#else
+# define PTHREAD_MUTEX_LOCK(_x)
+# define PTHREAD_MUTEX_UNLOCK(_x)
+#endif
-int fr_dns_lookups = 0;
+bool fr_dns_lookups = false; /* IP -> hostname lookups? */
+bool fr_hostname_lookups = true; /* hostname -> IP lookups? */
int fr_debug_flag = 0;
-/** Allocates a new talloc context from the root autofree context
+static char const *months[] = {
+ "jan", "feb", "mar", "apr", "may", "jun",
+ "jul", "aug", "sep", "oct", "nov", "dec" };
+
+fr_thread_local_setup(char *, fr_inet_ntop_buffer); /* macro */
+
+typedef struct fr_talloc_link {
+ bool armed;
+ TALLOC_CTX *child;
+} fr_talloc_link_t;
+
+/** Sets a signal handler using sigaction if available, else signal
*
- * @param signum signal raised.
+ * @param sig to set handler for.
+ * @param func handler to set.
*/
-static void _sigtrap_handler(UNUSED int signum)
+int fr_set_signal(int sig, sig_t func)
+{
+#ifdef HAVE_SIGACTION
+ struct sigaction act;
+
+ memset(&act, 0, sizeof(act));
+ act.sa_flags = 0;
+ sigemptyset(&act.sa_mask);
+ act.sa_handler = func;
+
+ if (sigaction(sig, &act, NULL) < 0) {
+ fr_strerror_printf("Failed setting signal %i handler via sigaction(): %s", sig, fr_syserror(errno));
+ return -1;
+ }
+#else
+ if (signal(sig, func) < 0) {
+ fr_strerror_printf("Failed setting signal %i handler via signal(): %s", sig, fr_syserror(errno));
+ return -1;
+ }
+#endif
+ return 0;
+}
+
+static int _fr_trigger_talloc_ctx_free(fr_talloc_link_t *trigger)
{
- fr_debugger_present = 0;
- signal(SIGTRAP, SIG_DFL);
+ if (trigger->armed) talloc_free(trigger->child);
+
+ return 0;
}
-/** Break in GDB (if were running under GDB)
+static int _fr_disarm_talloc_ctx_free(bool **armed)
+{
+ **armed = false;
+ return 0;
+}
+
+/** Link a parent and a child context, so the child is freed before the parent
*
- * If the server is running under GDB this will raise a SIGTRAP which
- * will pause the running process.
+ * @note This is not thread safe. Do not free parent before threads are joined, do not call from a child thread.
+ * @note It's OK to free the child before threads are joined, but this will leak memory until the parent is freed.
*
- * If the server is not running under GDB then this will do nothing.
+ * @param parent who's fate the child should share.
+ * @param child bound to parent's lifecycle.
+ * @return 0 on success -1 on failure.
*/
-void fr_debug_break(void)
+int fr_link_talloc_ctx_free(TALLOC_CTX *parent, TALLOC_CTX *child)
{
- if (fr_debugger_present == -1) {
- fr_debugger_present = 0;
- signal(SIGTRAP, _sigtrap_handler);
- raise(SIGTRAP);
- } else if (fr_debugger_present == 1) {
- raise(SIGTRAP);
- }
+ fr_talloc_link_t *trigger;
+ bool **disarm;
+
+ trigger = talloc(parent, fr_talloc_link_t);
+ if (!trigger) return -1;
+
+ disarm = talloc(child, bool *);
+ if (!disarm) {
+ talloc_free(trigger);
+ return -1;
+ }
+
+ trigger->child = child;
+ trigger->armed = true;
+ *disarm = &trigger->armed;
+
+ talloc_set_destructor(trigger, _fr_trigger_talloc_ctx_free);
+ talloc_set_destructor(disarm, _fr_disarm_talloc_ctx_free);
+
+ return 0;
+}
+
+/*
+ * Explicitly cleanup the memory allocated to the error inet_ntop
+ * buffer.
+ */
+static void _fr_inet_ntop_free(void *arg)
+{
+ free(arg);
+}
+
+/** Wrapper around inet_ntop, prints IPv4/IPv6 addresses
+ *
+ * inet_ntop requires the caller pass in a buffer for the address.
+ * This would be annoying and cumbersome, seeing as quite often the ASCII
+ * address is only used for logging output.
+ *
+ * So as with lib/log.c use TLS to allocate thread specific buffers, and
+ * write the IP address there instead.
+ *
+ * @param af address family, either AF_INET or AF_INET6.
+ * @param src pointer to network address structure.
+ * @return NULL on error, else pointer to ASCII buffer containing text version of address.
+ */
+char const *fr_inet_ntop(int af, void const *src)
+{
+ char *buffer;
+
+ if (!src) {
+ return NULL;
+ }
+
+ buffer = fr_thread_local_init(fr_inet_ntop_buffer, _fr_inet_ntop_free);
+ if (!buffer) {
+ int ret;
+
+ /*
+ * malloc is thread safe, talloc is not
+ */
+ buffer = malloc(sizeof(char) * INET6_ADDRSTRLEN);
+ if (!buffer) {
+ fr_perror("Failed allocating memory for inet_ntop buffer");
+ return NULL;
+ }
+
+ ret = fr_thread_local_set(fr_inet_ntop_buffer, buffer);
+ if (ret != 0) {
+ fr_perror("Failed setting up TLS for inet_ntop buffer: %s", fr_syserror(ret));
+ free(buffer);
+ return NULL;
+ }
+ }
+ buffer[0] = '\0';
+
+ return inet_ntop(af, src, buffer, INET6_ADDRSTRLEN);
}
/*
return buffer;
}
+/** Parse an IPv4 address or IPv4 prefix in presentation format (and others)
+ *
+ * @param out Where to write the ip address value.
+ * @param value to parse, may be dotted quad [+ prefix], or integer, or octal number, or '*' (INADDR_ANY).
+ * @param inlen Length of value, if value is \0 terminated inlen may be 0.
+ * @param resolve If true and value doesn't look like an IP address, try and resolve value as a hostname.
+ * @param fallback to IPv4 resolution if no A records can be found.
+ * @return 0 if ip address was parsed successfully, else -1 on error.
+ */
+int fr_pton4(fr_ipaddr_t *out, char const *value, size_t inlen, bool resolve, bool fallback)
+{
+ char *p;
+ unsigned int prefix;
+ char *eptr;
+
+ /* Dotted quad + / + [0-9]{1,2} */
+ char buffer[INET_ADDRSTRLEN + 3];
+
+ /*
+ * Copy to intermediary buffer if we were given a length
+ */
+ if (inlen > 0) {
+ if (inlen >= sizeof(buffer)) {
+ fr_strerror_printf("Invalid IPv4 address string \"%s\"", value);
+ return -1;
+ }
+ memcpy(buffer, value, inlen);
+ buffer[inlen] = '\0';
+ }
+
+ p = strchr(value, '/');
+ /*
+ * 192.0.2.2 is parsed as if it was /32
+ */
+ if (!p) {
+ /*
+ * Allow '*' as the wildcard address usually 0.0.0.0
+ */
+ if ((value[0] == '*') && (value[1] == '\0')) {
+ out->ipaddr.ip4addr.s_addr = htonl(INADDR_ANY);
+ /*
+ * Convert things which are obviously integers to IP addresses
+ *
+ * We assume the number is the bigendian representation of the
+ * IP address.
+ */
+ } else if (is_integer(value) || ((value[0] == '0') && (value[1] == 'x'))) {
+ out->ipaddr.ip4addr.s_addr = htonl(strtoul(value, NULL, 0));
+ } else if (!resolve) {
+ if (inet_pton(AF_INET, value, &(out->ipaddr.ip4addr.s_addr)) <= 0) {
+ fr_strerror_printf("Failed to parse IPv4 address string \"%s\"", value);
+ return -1;
+ }
+ } else if (ip_hton(out, AF_INET, value, fallback) < 0) return -1;
+
+ out->prefix = 32;
+ out->af = AF_INET;
+
+ return 0;
+ }
+
+ /*
+ * Otherwise parse the prefix
+ */
+ if ((size_t)(p - value) >= INET_ADDRSTRLEN) {
+ fr_strerror_printf("Invalid IPv4 address string \"%s\"", value);
+ return -1;
+ }
+
+ /*
+ * Copy the IP portion into a temporary buffer if we haven't already.
+ */
+ if (inlen == 0) memcpy(buffer, value, p - value);
+ buffer[p - value] = '\0';
+
+ if (!resolve) {
+ if (inet_pton(AF_INET, buffer, &(out->ipaddr.ip4addr.s_addr)) <= 0) {
+ fr_strerror_printf("Failed to parse IPv4 address string \"%s\"", value);
+ return -1;
+ }
+ } else if (ip_hton(out, AF_INET, buffer, fallback) < 0) return -1;
+
+ prefix = strtoul(p + 1, &eptr, 10);
+ if (prefix > 32) {
+ fr_strerror_printf("Invalid IPv4 mask length \"%s\". Should be between 0-32", p);
+ return -1;
+ }
+ if (eptr[0] != '\0') {
+ fr_strerror_printf("Failed to parse IPv4 address string \"%s\", "
+ "got garbage after mask length \"%s\"", value, eptr);
+ return -1;
+ }
+
+ if (prefix < 32) {
+ out->ipaddr.ip4addr = fr_inaddr_mask(&(out->ipaddr.ip4addr), prefix);
+ }
+
+ out->prefix = (uint8_t) prefix;
+ out->af = AF_INET;
+
+ return 0;
+}
+
+/** Parse an IPv6 address or IPv6 prefix in presentation format (and others)
+ *
+ * @param out Where to write the ip address value.
+ * @param value to parse.
+ * @param inlen Length of value, if value is \0 terminated inlen may be 0.
+ * @param resolve If true and value doesn't look like an IP address, try and resolve value as a hostname.
+ * @param fallback to IPv4 resolution if no AAAA records can be found.
+ * @return 0 if ip address was parsed successfully, else -1 on error.
+ */
+int fr_pton6(fr_ipaddr_t *out, char const *value, size_t inlen, bool resolve, bool fallback)
+{
+ char const *p;
+ unsigned int prefix;
+ char *eptr;
+
+ /* IPv6 + / + [0-9]{1,3} */
+ char buffer[INET6_ADDRSTRLEN + 4];
+
+ /*
+ * Copy to intermediary buffer if we were given a length
+ */
+ if (inlen > 0) {
+ if (inlen >= sizeof(buffer)) {
+ fr_strerror_printf("Invalid IPv6 address string \"%s\"", value);
+ return -1;
+ }
+ memcpy(buffer, value, inlen);
+ buffer[inlen] = '\0';
+ }
+
+ p = strchr(value, '/');
+ if (!p) {
+ /*
+ * Allow '*' as the wildcard address
+ */
+ if ((value[0] == '*') && (value[1] == '\0')) {
+ memset(&out->ipaddr.ip6addr.s6_addr, 0, sizeof(out->ipaddr.ip6addr.s6_addr));
+ } else if (!resolve) {
+ if (inet_pton(AF_INET6, value, &(out->ipaddr.ip6addr.s6_addr)) <= 0) {
+ fr_strerror_printf("Failed to parse IPv6 address string \"%s\"", value);
+ return -1;
+ }
+ } else if (ip_hton(out, AF_INET6, value, fallback) < 0) return -1;
+
+ out->prefix = 128;
+ out->af = AF_INET6;
+
+ return 0;
+ }
+
+ if ((p - value) >= INET6_ADDRSTRLEN) {
+ fr_strerror_printf("Invalid IPv6 address string \"%s\"", value);
+ return -1;
+ }
+
+ /*
+ * Copy string to temporary buffer if we didn't do it earlier
+ */
+ if (inlen == 0) memcpy(buffer, value, p - value);
+ buffer[p - value] = '\0';
+
+ if (!resolve) {
+ if (inet_pton(AF_INET6, buffer, &(out->ipaddr.ip6addr.s6_addr)) <= 0) {
+ fr_strerror_printf("Failed to parse IPv6 address string \"%s\"", value);
+ return -1;
+ }
+ } else if (ip_hton(out, AF_INET6, buffer, fallback) < 0) return -1;
+
+ prefix = strtoul(p + 1, &eptr, 10);
+ if (prefix > 128) {
+ fr_strerror_printf("Invalid IPv6 mask length \"%s\". Should be between 0-128", p);
+ return -1;
+ }
+ if (eptr[0] != '\0') {
+ fr_strerror_printf("Failed to parse IPv6 address string \"%s\", "
+ "got garbage after mask length \"%s\"", value, eptr);
+ return -1;
+ }
+
+ if (prefix < 128) {
+ struct in6_addr addr;
+
+ addr = fr_in6addr_mask(&(out->ipaddr.ip6addr), prefix);
+ memcpy(&(out->ipaddr.ip6addr.s6_addr), &addr, sizeof(addr));
+ }
+
+ out->prefix = (uint8_t) prefix;
+ out->af = AF_INET6;
+
+ return 0;
+}
+
+/** Simple wrapper to decide whether an IP value is v4 or v6 and call the appropriate parser.
+ *
+ * @param out Where to write the ip address value.
+ * @param value to parse.
+ * @param inlen Length of value, if value is \0 terminated inlen may be 0.
+ * @param resolve If true and value doesn't look like an IP address, try and resolve value as a hostname.
+ * @return 0 if ip address was parsed successfully, else -1 on error.
+ */
+int fr_pton(fr_ipaddr_t *out, char const *value, size_t inlen, bool resolve)
+{
+ size_t len, i;
+
+ len = (inlen == 0) ? strlen(value) : inlen;
+ for (i = 0; i < len; i++) switch (value[i]) {
+ /*
+ * Chars illegal in domain names and IPv4 addresses.
+ * Must be v6 and cannot be a domain.
+ */
+ case ':':
+ case '[':
+ case ']':
+ return fr_pton6(out, value, inlen, false, false);
+
+ /*
+ * Chars which don't really tell us anything
+ */
+ case '.':
+ case '/':
+ continue;
+
+ default:
+ /*
+ * Outside the range of IPv4 chars, must be a domain
+ * Use A record in preference to AAAA record.
+ */
+ if ((value[i] < '0') || (value[i] > '9')) {
+ if (!resolve) return -1;
+ return fr_pton4(out, value, inlen, true, true);
+ }
+ break;
+ }
+
+ /*
+ * All chars were in the IPv4 set [0-9/.], must be an IPv4
+ * address.
+ */
+ return fr_pton4(out, value, inlen, false, false);
+}
+
+/** Check if the IP address is equivalent to INADDR_ANY
+ *
+ * @param addr to chec.
+ * @return true if IP address matches INADDR_ANY or INADDR6_ANY (assumed to be 0), else false.
+ */
+bool is_wildcard(fr_ipaddr_t *addr)
+{
+ static struct in6_addr in6_addr;
+
+ switch (addr->af) {
+ case AF_INET:
+ return (addr->ipaddr.ip4addr.s_addr == htons(INADDR_ANY));
+
+ case AF_INET6:
+ return (memcmp(addr->ipaddr.ip6addr.s6_addr, in6_addr.s6_addr, sizeof(in6_addr.s6_addr)) == 0) ? true :false;
+
+ default:
+ fr_assert(0);
+ return false;
+ }
+}
+
+int fr_ntop(char *out, size_t outlen, fr_ipaddr_t *addr)
+{
+ char buffer[INET6_ADDRSTRLEN];
+
+ if (inet_ntop(addr->af, &(addr->ipaddr), buffer, sizeof(buffer)) == NULL) return -1;
+
+ return snprintf(out, outlen, "%s/%i", buffer, addr->prefix);
+}
+
/*
* Internal wrapper for locking, to minimize the number of ifdef's
*
* author:
* Paul Vixie, 1996.
*/
-static int
-inet_pton6(char const *src, unsigned char *dst)
+static int inet_pton6(char const *src, unsigned char *dst)
{
static char const xdigits_l[] = "0123456789abcdef",
xdigits_u[] = "0123456789ABCDEF";
}
#endif
-
#ifndef HAVE_INET_NTOP
/*
* Utility function, so that the rest of the server doesn't
* in missing.h
*/
if (af == AF_INET6) {
- struct const in6_addr *ipaddr = src;
+ struct in6_addr const *ipaddr = src;
if (cnt <= INET6_ADDRSTRLEN) return NULL;
}
#endif
-
-/*
- * Wrappers for IPv4/IPv6 host to IP address lookup.
- * This API returns only one IP address, of the specified
- * address family, or the first address (of whatever family),
- * if AF_UNSPEC is used.
+/** Wrappers for IPv4/IPv6 host to IP address lookup
+ *
+ * This function returns only one IP address, of the specified address family,
+ * or the first address (of whatever family), if AF_UNSPEC is used.
+ *
+ * If fallback is specified and af is AF_INET, but no AF_INET records were
+ * found and a record for AF_INET6 exists that record will be returned.
+ *
+ * If fallback is specified and af is AF_INET6, and a record with AF_INET4 exists
+ * that record will be returned instead.
+ *
+ * @param out Where to write result.
+ * @param af To search for in preference.
+ * @param hostname to search for.
+ * @param fallback to the other adress family, if no records matching af, found.
+ * @return 0 on success, else -1 on failure.
*/
-int ip_hton(char const *src, int af, fr_ipaddr_t *dst)
+int ip_hton(fr_ipaddr_t *out, int af, char const *hostname, bool fallback)
{
int rcode;
- struct addrinfo hints, *ai = NULL, *res = NULL;
+ struct addrinfo hints, *ai = NULL, *alt = NULL, *res = NULL;
+
+ if (!fr_hostname_lookups) {
+#ifdef HAVE_STRUCT_SOCKADDR_IN6
+ if (af == AF_UNSPEC) {
+ char const *p;
+
+ for (p = hostname; *p != '\0'; p++) {
+ if ((*p == ':') ||
+ (*p == '[') ||
+ (*p == ']')) {
+ af = AF_INET6;
+ break;
+ }
+ }
+ }
+#endif
+
+ if (af == AF_UNSPEC) af = AF_INET;
+
+ if (!inet_pton(af, hostname, &(out->ipaddr))) {
+ return -1;
+ }
+
+ out->af = af;
+ return 0;
+ }
memset(&hints, 0, sizeof(hints));
hints.ai_family = af;
- if ((rcode = getaddrinfo(src, NULL, &hints, &res)) != 0) {
+#ifdef TALLOC_DEBUG
+ /*
+ * Avoid malloc for IP addresses. This helps us debug
+ * memory errors when using talloc.
+ */
+ if (af == AF_INET) {
+ /*
+ * If it's all numeric, avoid getaddrinfo()
+ */
+ if (inet_pton(af, hostname, &out->ipaddr.ip4addr) == 1) {
+ return 0;
+ }
+ }
+#endif
+
+ if ((rcode = getaddrinfo(hostname, NULL, &hints, &res)) != 0) {
fr_strerror_printf("ip_hton: %s", gai_strerror(rcode));
return -1;
}
for (ai = res; ai; ai = ai->ai_next) {
- if ((af == ai->ai_family) || (af == AF_UNSPEC))
- break;
+ if ((af == ai->ai_family) || (af == AF_UNSPEC)) break;
+ if (!alt && fallback && ((ai->ai_family == AF_INET) || (ai->ai_family == AF_INET6))) alt = ai;
}
+ if (!ai) ai = alt;
if (!ai) {
- fr_strerror_printf("ip_hton failed to find requested information for host %.100s", src);
+ fr_strerror_printf("ip_hton failed to find requested information for host %.100s", hostname);
freeaddrinfo(ai);
return -1;
}
rcode = fr_sockaddr2ipaddr((struct sockaddr_storage *)ai->ai_addr,
- ai->ai_addrlen, dst, NULL);
+ ai->ai_addrlen, out, NULL);
freeaddrinfo(ai);
if (!rcode) return -1;
return dst;
}
+/** Mask off a portion of an IPv4 address
+ *
+ * @param ipaddr to mask.
+ * @param prefix Number of contiguous bits to mask.
+ * @return an ipv6 address with the host portion zeroed out.
+ */
+struct in_addr fr_inaddr_mask(struct in_addr const *ipaddr, uint8_t prefix)
+{
+ uint32_t ret;
+
+ if (prefix > 32) {
+ prefix = 32;
+ }
+
+ /* Short circuit */
+ if (prefix == 32) {
+ return *ipaddr;
+ }
+
+ ret = htonl(~((0x00000001UL << (32 - prefix)) - 1)) & ipaddr->s_addr;
+ return (*(struct in_addr *)&ret);
+}
+
+/** Mask off a portion of an IPv6 address
+ *
+ * @param ipaddr to mask.
+ * @param prefix Number of contiguous bits to mask.
+ * @return an ipv6 address with the host portion zeroed out.
+ */
+struct in6_addr fr_in6addr_mask(struct in6_addr const *ipaddr, uint8_t prefix)
+{
+ uint64_t const *p = (uint64_t const *) ipaddr;
+ uint64_t ret[2], *o = ret;
-static char const *hextab = "0123456789abcdef";
+ if (prefix > 128) {
+ prefix = 128;
+ }
+
+ /* Short circuit */
+ if (prefix == 128) {
+ return *ipaddr;
+ }
+
+ if (prefix >= 64) {
+ prefix -= 64;
+ *o++ = 0xffffffffffffffffULL & *p++;
+ } else {
+ ret[1] = 0;
+ }
+
+ *o = htonll(~((0x0000000000000001ULL << (64 - prefix)) - 1)) & *p;
+
+ return *(struct in6_addr *) &ret;
+}
+
+/** Zeroes out the host portion of an fr_ipaddr_t
+ *
+ * @param[in,out] addr to mask
+ * @param[in] prefix Length of the network portion.
+ */
+void fr_ipaddr_mask(fr_ipaddr_t *addr, uint8_t prefix)
+{
+
+ switch (addr->af) {
+ case AF_INET:
+ addr->ipaddr.ip4addr = fr_inaddr_mask(&addr->ipaddr.ip4addr, prefix);
+ break;
+
+ case AF_INET6:
+ addr->ipaddr.ip6addr = fr_in6addr_mask(&addr->ipaddr.ip6addr, prefix);
+ break;
+
+ default:
+ return;
+ }
+ addr->prefix = prefix;
+}
+
+static char const hextab[] = "0123456789abcdef";
/** Convert hex strings to binary data
*
* @param bin Buffer to write output to.
- * @param hex input string.
* @param outlen length of output buffer (or length of input string / 2).
+ * @param hex input string.
+ * @param inlen length of the input string
* @return length of data written to buffer.
*/
-size_t fr_hex2bin(uint8_t *bin, char const *hex, size_t outlen)
+size_t fr_hex2bin(uint8_t *bin, size_t outlen, char const *hex, size_t inlen)
{
size_t i;
+ size_t len;
char *c1, *c2;
- for (i = 0; i < outlen; i++) {
- if(!(c1 = memchr(hextab, tolower((int) hex[i << 1]), 16)) ||
- !(c2 = memchr(hextab, tolower((int) hex[(i << 1) + 1]), 16)))
+ /*
+ * Smartly truncate output, caller should check number of bytes
+ * written.
+ */
+ len = inlen >> 1;
+ if (len > outlen) len = outlen;
+
+ for (i = 0; i < len; i++) {
+ if(!(c1 = memchr(hextab, tolower((int) hex[i << 1]), sizeof(hextab))) ||
+ !(c2 = memchr(hextab, tolower((int) hex[(i << 1) + 1]), sizeof(hextab))))
break;
- bin[i] = ((c1-hextab)<<4) + (c2-hextab);
+ bin[i] = ((c1-hextab)<<4) + (c2-hextab);
}
return i;
}
+
+/** Consume the integer (or hex) portion of a value string
+ *
+ * @param value string to parse.
+ * @param end pointer to the first non numeric char.
+ * @return integer value.
+ */
+uint32_t fr_strtoul(char const *value, char **end)
+{
+ if ((value[0] == '0') && (value[1] == 'x')) {
+ return strtoul(value, end, 16);
+ }
+
+ return strtoul(value, end, 10);
+}
+
+/** Check whether the string is all whitespace
+ *
+ * @return true if the entirety of the string is whitespace, else false.
+ */
+bool is_whitespace(char const *value)
+{
+ do {
+ if (!isspace(*value)) return false;
+ } while (*++value);
+
+ return true;
+}
+
+/** Check whether the string is all numbers
+ *
+ * @return true if the entirety of the string is are numebrs, else false.
+ */
+bool is_integer(char const *value)
+{
+ do {
+ if (!isdigit(*value)) return false;
+ } while (*++value);
+
+ return true;
+}
+
+/** Check whether the string is allzeros
+ *
+ * @return true if the entirety of the string is are numebrs, else false.
+ */
+bool is_zero(char const *value)
+{
+ do {
+ if (*value != '0') return false;
+ } while (*++value);
+
+ return true;
+}
+
/*
* So we don't have ifdef's in the rest of the code
*/
return -1;
}
-int fr_ipaddr2sockaddr(fr_ipaddr_t const *ipaddr, int port,
+int fr_ipaddr2sockaddr(fr_ipaddr_t const *ipaddr, uint16_t port,
struct sockaddr_storage *sa, socklen_t *salen)
{
if (ipaddr->af == AF_INET) {
int fr_sockaddr2ipaddr(struct sockaddr_storage const *sa, socklen_t salen,
- fr_ipaddr_t *ipaddr, int *port)
+ fr_ipaddr_t *ipaddr, uint16_t *port)
{
if (sa->ss_family == AF_INET) {
struct sockaddr_in s4;
memcpy(&s4, sa, sizeof(s4));
ipaddr->af = AF_INET;
+ ipaddr->prefix = 32;
ipaddr->ipaddr.ip4addr = s4.sin_addr;
if (port) *port = ntohs(s4.sin_port);
memcpy(&s6, sa, sizeof(s6));
ipaddr->af = AF_INET6;
+ ipaddr->prefix = 128;
ipaddr->ipaddr.ip6addr = s6.sin6_addr;
if (port) *port = ntohs(s6.sin6_port);
ipaddr->scope = s6.sin6_scope_id;
return out - start;
}
+/** Write 128bit unsigned integer to buffer
+ *
+ * @author Alexey Frunze
+ *
+ * @param out where to write result to.
+ * @param outlen size of out.
+ * @param num 128 bit integer.
+ */
+size_t fr_prints_uint128(char *out, size_t outlen, uint128_t const num)
+{
+ char buff[128 / 3 + 1 + 1];
+ uint64_t n[2];
+ char *p = buff;
+ int i;
+
+ memset(buff, '0', sizeof(buff) - 1);
+ buff[sizeof(buff) - 1] = '\0';
+
+ memcpy(n, &num, sizeof(n));
+
+ for (i = 0; i < 128; i++) {
+ ssize_t j;
+ int carry;
+
+ carry = (n[1] >= 0x8000000000000000);
+
+ // Shift n[] left, doubling it
+ n[1] = ((n[1] << 1) & 0xffffffffffffffff) + (n[0] >= 0x8000000000000000);
+ n[0] = ((n[0] << 1) & 0xffffffffffffffff);
+
+ // Add s[] to itself in decimal, doubling it
+ for (j = sizeof(buff) - 2; j >= 0; j--) {
+ buff[j] += buff[j] - '0' + carry;
+ carry = (buff[j] > '9');
+ if (carry) {
+ buff[j] -= 10;
+ }
+ }
+ }
+
+ while ((*p == '0') && (p < &buff[sizeof(buff) - 2])) {
+ p++;
+ }
+
+ return strlcpy(out, p, outlen);
+}
+
+/** Calculate powers
+ *
+ * @author Orson Peters
+ * @note Borrowed from the gist here: https://gist.github.com/nightcracker/3551590.
+ *
+ * @param base a 32bit signed integer.
+ * @param exp amount to raise base by.
+ * @return base ^ pow, or 0 on underflow/overflow.
+ */
+int64_t fr_pow(int32_t base, uint8_t exp) {
+ static const uint8_t highest_bit_set[] = {
+ 0, 1, 2, 2, 3, 3, 3, 3,
+ 4, 4, 4, 4, 4, 4, 4, 4,
+ 5, 5, 5, 5, 5, 5, 5, 5,
+ 5, 5, 5, 5, 5, 5, 5, 5,
+ 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 6,
+ 6, 6, 6, 6, 6, 6, 6, 255, // anything past 63 is a guaranteed overflow with base > 1
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ 255, 255, 255, 255, 255, 255, 255, 255,
+ };
+
+ uint64_t result = 1;
+
+ switch (highest_bit_set[exp]) {
+ case 255: // we use 255 as an overflow marker and return 0 on overflow/underflow
+ if (base == 1) {
+ return 1;
+ }
+
+ if (base == -1) {
+ return 1 - 2 * (exp & 1);
+ }
+ return 0;
+ case 6:
+ if (exp & 1) result *= base;
+ exp >>= 1;
+ base *= base;
+ case 5:
+ if (exp & 1) result *= base;
+ exp >>= 1;
+ base *= base;
+ case 4:
+ if (exp & 1) result *= base;
+ exp >>= 1;
+ base *= base;
+ case 3:
+ if (exp & 1) result *= base;
+ exp >>= 1;
+ base *= base;
+ case 2:
+ if (exp & 1) result *= base;
+ exp >>= 1;
+ base *= base;
+ case 1:
+ if (exp & 1) result *= base;
+ default:
+ return result;
+ }
+}
+
+/*
+ * Sort of strtok/strsep function.
+ */
+static char *mystrtok(char **ptr, char const *sep)
+{
+ char *res;
+
+ if (**ptr == 0) {
+ return NULL;
+ }
+
+ while (**ptr && strchr(sep, **ptr)) {
+ (*ptr)++;
+ }
+ if (**ptr == 0) {
+ return NULL;
+ }
+
+ res = *ptr;
+ while (**ptr && strchr(sep, **ptr) == NULL) {
+ (*ptr)++;
+ }
+
+ if (**ptr != 0) {
+ *(*ptr)++ = 0;
+ }
+ return res;
+}
+
+/** Convert string in various formats to a time_t
+ *
+ * @param date_str input date string.
+ * @param date time_t to write result to.
+ * @return 0 on success or -1 on error.
+ */
+int fr_get_time(char const *date_str, time_t *date)
+{
+ int i;
+ time_t t;
+ struct tm *tm, s_tm;
+ char buf[64];
+ char *p;
+ char *f[4];
+ char *tail = NULL;
+
+ /*
+ * Test for unix timestamp date
+ */
+ *date = strtoul(date_str, &tail, 10);
+ if (*tail == '\0') {
+ return 0;
+ }
+
+ tm = &s_tm;
+ memset(tm, 0, sizeof(*tm));
+ tm->tm_isdst = -1; /* don't know, and don't care about DST */
+
+ strlcpy(buf, date_str, sizeof(buf));
+
+ p = buf;
+ f[0] = mystrtok(&p, " \t");
+ f[1] = mystrtok(&p, " \t");
+ f[2] = mystrtok(&p, " \t");
+ f[3] = mystrtok(&p, " \t"); /* may, or may not, be present */
+ if (!f[0] || !f[1] || !f[2]) return -1;
+
+ /*
+ * The time has a colon, where nothing else does.
+ * So if we find it, bubble it to the back of the list.
+ */
+ if (f[3]) {
+ for (i = 0; i < 3; i++) {
+ if (strchr(f[i], ':')) {
+ p = f[3];
+ f[3] = f[i];
+ f[i] = p;
+ break;
+ }
+ }
+ }
+
+ /*
+ * The month is text, which allows us to find it easily.
+ */
+ tm->tm_mon = 12;
+ for (i = 0; i < 3; i++) {
+ if (isalpha( (int) *f[i])) {
+ /*
+ * Bubble the month to the front of the list
+ */
+ p = f[0];
+ f[0] = f[i];
+ f[i] = p;
+
+ for (i = 0; i < 12; i++) {
+ if (strncasecmp(months[i], f[0], 3) == 0) {
+ tm->tm_mon = i;
+ break;
+ }
+ }
+ }
+ }
+
+ /* month not found? */
+ if (tm->tm_mon == 12) return -1;
+
+ /*
+ * The year may be in f[1], or in f[2]
+ */
+ tm->tm_year = atoi(f[1]);
+ tm->tm_mday = atoi(f[2]);
+
+ if (tm->tm_year >= 1900) {
+ tm->tm_year -= 1900;
+
+ } else {
+ /*
+ * We can't use 2-digit years any more, they make it
+ * impossible to tell what's the day, and what's the year.
+ */
+ if (tm->tm_mday < 1900) return -1;
+
+ /*
+ * Swap the year and the day.
+ */
+ i = tm->tm_year;
+ tm->tm_year = tm->tm_mday - 1900;
+ tm->tm_mday = i;
+ }
+
+ /*
+ * If the day is out of range, die.
+ */
+ if ((tm->tm_mday < 1) || (tm->tm_mday > 31)) {
+ return -1;
+ }
+
+ /*
+ * There may be %H:%M:%S. Parse it in a hacky way.
+ */
+ if (f[3]) {
+ f[0] = f[3]; /* HH */
+ f[1] = strchr(f[0], ':'); /* find : separator */
+ if (!f[1]) return -1;
+
+ *(f[1]++) = '\0'; /* nuke it, and point to MM:SS */
+
+ f[2] = strchr(f[1], ':'); /* find : separator */
+ if (f[2]) {
+ *(f[2]++) = '\0'; /* nuke it, and point to SS */
+ tm->tm_sec = atoi(f[2]);
+ } /* else leave it as zero */
+
+ tm->tm_hour = atoi(f[0]);
+ tm->tm_min = atoi(f[1]);
+ }
+
+ /*
+ * Returns -1 on error.
+ */
+ t = mktime(tm);
+ if (t == (time_t) -1) return -1;
+
+ *date = t;
+
+ return 0;
+}
+
+/** Compares two pointers
+ *
+ * @param a first pointer to compare.
+ * @param b second pointer to compare.
+ * @return -1 if a < b, +1 if b > a, or 0 if both equal.
+ */
+int8_t fr_pointer_cmp(void const *a, void const *b)
+{
+ if (a < b) return -1;
+ if (a == b) return 0;
+
+ return 1;
+}
+
+static int _quick_partition(void const *to_sort[], int min, int max, fr_cmp_t cmp) {
+ void const *pivot = to_sort[min];
+ int i = min;
+ int j = max + 1;
+ void const *tmp;
+
+ for (;;) {
+ do ++i; while((cmp(to_sort[i], pivot) <= 0) && i <= max);
+ do --j; while(cmp(to_sort[j], pivot) > 0);
+
+ if (i >= j) break;
+
+ tmp = to_sort[i];
+ to_sort[i] = to_sort[j];
+ to_sort[j] = tmp;
+ }
+
+ tmp = to_sort[min];
+ to_sort[min] = to_sort[j];
+ to_sort[j] = tmp;
+
+ return j;
+}
+
+/** Quick sort an array of pointers using a comparator
+ *
+ * @param to_sort array of pointers to sort.
+ * @param min_idx the lowest index (usually 0).
+ * @param max_idx the highest index (usually length of array - 1).
+ * @param cmp the comparison function to use to sort the array elements.
+ */
+void fr_quick_sort(void const *to_sort[], int min_idx, int max_idx, fr_cmp_t cmp)
+{
+ int part;
+
+ if (min_idx >= max_idx) return;
+
+ part = _quick_partition(to_sort, min_idx, max_idx, cmp);
+ fr_quick_sort(to_sort, min_idx, part - 1, cmp);
+ fr_quick_sort(to_sort, part + 1, max_idx, cmp);
+}
+
+#ifdef TALLOC_DEBUG
+void fr_talloc_verify_cb(UNUSED const void *ptr, UNUSED int depth,
+ UNUSED int max_depth, UNUSED int is_ref,
+ UNUSED void *private_data)
+{
+ /* do nothing */
+}
+#endif
projects / freeradius.git / blobdiff