From d1341b1c153afbbc0f3d9be1e9ebfdadc49803f0 Mon Sep 17 00:00:00 2001 From: Sara Golemon Date: Fri, 6 Aug 2004 18:38:35 +0000 Subject: [PATCH] Add A6 support, fix IPv6 address parsing, and improve define compatability --- ext/standard/dns.c | 264 ++++++++++++++++++++++++++++++++------------- 1 file changed, 187 insertions(+), 77 deletions(-) diff --git a/ext/standard/dns.c b/ext/standard/dns.c index 6c6f0fc20c..47c6d314ab 100644 --- a/ext/standard/dns.c +++ b/ext/standard/dns.c @@ -69,6 +69,51 @@ #endif #include "dns.h" + +/* type compat */ +#ifndef DNS_T_A +#define DNS_T_A 1 +#endif +#ifndef DNS_T_NS +#define DNS_T_NS 2 +#endif +#ifndef DNS_T_CNAME +#define DNS_T_CNAME 5 +#endif +#ifndef DNS_T_SOA +#define DNS_T_SOA 6 +#endif +#ifndef DNS_T_PTR +#define DNS_T_PTR 12 +#endif +#ifndef DNS_T_HINFO +#define DNS_T_HINFO 13 +#endif +#ifndef DNS_T_MINFO +#define DNS_T_MINFO 14 +#endif +#ifndef DNS_T_MX +#define DNS_T_MX 15 +#endif +#ifndef DNS_T_TXT +#define DNS_T_TXT 16 +#endif +#ifndef DNS_T_AAAA +#define DNS_T_AAAA 28 +#endif +#ifndef DNS_T_SRV +#define DNS_T_SRV 33 +#endif +#ifndef DNS_T_NAPTR +#define DNS_T_NAPTR 35 +#endif +#ifndef DNS_T_A6 +#define DNS_T_A6 38 +#endif + +#ifndef DNS_T_ANY +#define DNS_T_ANY 255 +#endif /* }}} */ static char *php_gethostbyaddr(char *ip); @@ -229,21 +274,16 @@ PHP_FUNCTION(dns_check_record) convert_to_string_ex(arg2); if (!strcasecmp("A", Z_STRVAL_PP(arg2))) type = T_A; - else if (!strcasecmp("NS", Z_STRVAL_PP(arg2))) type = T_NS; - else if (!strcasecmp("MX", Z_STRVAL_PP(arg2))) type = T_MX; - else if (!strcasecmp("PTR", Z_STRVAL_PP(arg2))) type = T_PTR; - else if (!strcasecmp("ANY", Z_STRVAL_PP(arg2))) type = T_ANY; - else if (!strcasecmp("SOA", Z_STRVAL_PP(arg2))) type = T_SOA; - else if (!strcasecmp("CNAME", Z_STRVAL_PP(arg2))) type = T_CNAME; -#ifdef T_AAAA - else if (!strcasecmp("AAAA", Z_STRVAL_PP(arg2))) type = T_AAAA; -#endif -#ifdef T_SRV - else if (!strcasecmp("SRV", Z_STRVAL_PP(arg2))) type = T_SRV; -#endif -#ifdef T_NAPTR - else if (!strcasecmp("NAPTR", Z_STRVAL_PP(arg2))) type = T_NAPTR; -#endif + else if (!strcasecmp("NS", Z_STRVAL_PP(arg2))) type = DNS_T_NS; + else if (!strcasecmp("MX", Z_STRVAL_PP(arg2))) type = DNS_T_MX; + else if (!strcasecmp("PTR", Z_STRVAL_PP(arg2))) type = DNS_T_PTR; + else if (!strcasecmp("ANY", Z_STRVAL_PP(arg2))) type = DNS_T_ANY; + else if (!strcasecmp("SOA", Z_STRVAL_PP(arg2))) type = DNS_T_SOA; + else if (!strcasecmp("CNAME", Z_STRVAL_PP(arg2))) type = DNS_T_CNAME; + else if (!strcasecmp("AAAA", Z_STRVAL_PP(arg2))) type = DNS_T_AAAA; + else if (!strcasecmp("SRV", Z_STRVAL_PP(arg2))) type = DNS_T_SRV; + else if (!strcasecmp("NAPTR", Z_STRVAL_PP(arg2))) type = DNS_T_NAPTR; + else if (!strcasecmp("A6", Z_STRVAL_PP(arg2))) type = DNS_T_A6; else { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Type '%s' not supported", Z_STRVAL_PP(arg2)); RETURN_FALSE; @@ -266,7 +306,7 @@ PHP_FUNCTION(dns_check_record) #if HAVE_DNS_FUNCS -#define PHP_DNS_NUM_TYPES 11 /* Number of DNS Types Supported by PHP currently */ +#define PHP_DNS_NUM_TYPES 12 /* Number of DNS Types Supported by PHP currently */ #define PHP_DNS_A 0x00000001 #define PHP_DNS_NS 0x00000002 @@ -276,11 +316,12 @@ PHP_FUNCTION(dns_check_record) #define PHP_DNS_HINFO 0x00001000 #define PHP_DNS_MX 0x00004000 #define PHP_DNS_TXT 0x00008000 +#define PHP_DNS_A6 0x01000000 #define PHP_DNS_SRV 0x02000000 #define PHP_DNS_NAPTR 0x04000000 #define PHP_DNS_AAAA 0x08000000 #define PHP_DNS_ANY 0x10000000 -#define PHP_DNS_ALL (PHP_DNS_A|PHP_DNS_NS|PHP_DNS_CNAME|PHP_DNS_SOA|PHP_DNS_PTR|PHP_DNS_HINFO|PHP_DNS_MX|PHP_DNS_TXT|PHP_DNS_SRV|PHP_DNS_NAPTR|PHP_DNS_AAAA) +#define PHP_DNS_ALL (PHP_DNS_A|PHP_DNS_NS|PHP_DNS_CNAME|PHP_DNS_SOA|PHP_DNS_PTR|PHP_DNS_HINFO|PHP_DNS_MX|PHP_DNS_TXT|PHP_DNS_A6|PHP_DNS_SRV|PHP_DNS_NAPTR|PHP_DNS_AAAA) PHP_MINIT_FUNCTION(dns) { REGISTER_LONG_CONSTANT("DNS_A", PHP_DNS_A, CONST_CS | CONST_PERSISTENT); @@ -294,6 +335,7 @@ PHP_MINIT_FUNCTION(dns) { REGISTER_LONG_CONSTANT("DNS_SRV", PHP_DNS_SRV, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_NAPTR", PHP_DNS_NAPTR, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_AAAA", PHP_DNS_AAAA, CONST_CS | CONST_PERSISTENT); + REGISTER_LONG_CONSTANT("DNS_A6", PHP_DNS_A6, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_ANY", PHP_DNS_ANY, CONST_CS | CONST_PERSISTENT); REGISTER_LONG_CONSTANT("DNS_ALL", PHP_DNS_ALL, CONST_CS | CONST_PERSISTENT); return SUCCESS; @@ -327,8 +369,9 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int u_long ttl; long n, i; u_short s; - u_char *tp; + u_char *tp, *p; char name[MAXHOSTNAMELEN]; + int have_v6_break = 0, in_v6_break = 0; n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof(name)) - 2); if (n < 0) { @@ -357,27 +400,27 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int add_assoc_string(*subarray, "host", name, 1); switch (type) { - case T_A: + case DNS_T_A: add_assoc_string(*subarray, "type", "A", 1); sprintf(name, "%d.%d.%d.%d", cp[0], cp[1], cp[2], cp[3]); add_assoc_string(*subarray, "ip", name, 1); cp += dlen; break; - case T_MX: + case DNS_T_MX: add_assoc_string(*subarray, "type", "MX", 1); GETSHORT(n, cp); add_assoc_long(*subarray, "pri", n); /* no break; */ - case T_CNAME: - if (type == T_CNAME) + case DNS_T_CNAME: + if (type == DNS_T_CNAME) add_assoc_string(*subarray, "type", "CNAME", 1); /* no break; */ - case T_NS: - if (type == T_NS) + case DNS_T_NS: + if (type == DNS_T_NS) add_assoc_string(*subarray, "type", "NS", 1); /* no break; */ - case T_PTR: - if (type == T_PTR) + case DNS_T_PTR: + if (type == DNS_T_PTR) add_assoc_string(*subarray, "type", "PTR", 1); n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2); if (n < 0) { @@ -386,7 +429,7 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int cp += n; add_assoc_string(*subarray, "target", name, 1); break; - case T_HINFO: + case DNS_T_HINFO: /* See RFC 1010 for values */ add_assoc_string(*subarray, "type", "HINFO", 1); n = *cp & 0xFF; @@ -398,7 +441,7 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int add_assoc_stringl(*subarray, "os", cp, n, 1); cp += n; break; - case T_TXT: + case DNS_T_TXT: add_assoc_string(*subarray, "type", "TXT", 1); n = cp[0]; tp = emalloc(n + 1); @@ -407,7 +450,7 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int cp += dlen; add_assoc_stringl(*subarray, "txt", tp, n, 0); break; - case T_SOA: + case DNS_T_SOA: add_assoc_string(*subarray, "type", "SOA", 1); n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) -2); if (n < 0) { @@ -432,35 +475,115 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int GETLONG(n, cp); add_assoc_long(*subarray, "minimum-ttl", n); break; - -#ifdef T_AAAA - case T_AAAA: + case DNS_T_AAAA: tp = name; for(i=0; i < 8; i++) { GETSHORT(s, cp); - if (s > 0) { + if (s != 0) { if (tp > (u_char *)name) { + in_v6_break = 0; tp[0] = ':'; tp++; } - sprintf(tp,"%x",s); - tp += strlen(tp); - } else if (s == 0) { - if ((tp > (u_char *)name) && (tp[-1] != ':')) { + tp += sprintf(tp,"%x",s); + } else { + if (!have_v6_break) { + have_v6_break = 1; + in_v6_break = 1; tp[0] = ':'; tp++; + } else if (!in_v6_break) { + tp[0] = ':'; + tp++; + tp[0] = '0'; + tp++; } } } - if ((tp > (u_char *)name) && (tp[-1] == ':')) - tp[-1] = '\0'; + if (have_v6_break && in_v6_break) { + tp[0] = ':'; + tp++; + } tp[0] = '\0'; add_assoc_string(*subarray, "type", "AAAA", 1); add_assoc_string(*subarray, "ipv6", name, 1); + break; + case DNS_T_A6: + p = cp; + add_assoc_string(*subarray, "type", "A6", 1); + n = ((int)cp[0]) & 0xFF; + cp++; + add_assoc_long(*subarray, "masklen", n); + tp = name; + if (n > 15) { + have_v6_break = 1; + in_v6_break = 1; + tp[0] = ':'; + tp++; + } + if (n % 16 > 8) { + /* Partial short */ + if (cp[0] != 0) { + if (tp > (u_char *)name) { + in_v6_break = 0; + tp[0] = ':'; + tp++; + } + sprintf(tp, "%x", cp[0] & 0xFF); + } else { + if (!have_v6_break) { + have_v6_break = 1; + in_v6_break = 1; + tp[0] = ':'; + tp++; + } else if (!in_v6_break) { + tp[0] = ':'; + tp++; + tp[0] = '0'; + tp++; + } + } + cp++; + } + for(i = (n+8)/16; i < 8; i++) { + GETSHORT(s, cp); + if (s != 0) { + if (tp > (u_char *)name) { + in_v6_break = 0; + tp[0] = ':'; + tp++; + } + tp += sprintf(tp,"%x",s); + } else { + if (!have_v6_break) { + have_v6_break = 1; + in_v6_break = 1; + tp[0] = ':'; + tp++; + } else if (!in_v6_break) { + tp[0] = ':'; + tp++; + tp[0] = '0'; + tp++; + } + } + } + if (have_v6_break && in_v6_break) { + tp[0] = ':'; + tp++; + } + tp[0] = '\0'; + add_assoc_string(*subarray, "ipv6", name, 1); + if (cp < p + dlen) { + n = dn_expand(answer->qb2, answer->qb2+65536, cp, name, (sizeof name) - 2); + if (n < 0) { + return NULL; + } + cp += n; + add_assoc_string(*subarray, "chain", name, 1); + } break; -#endif -#ifdef T_SRV - case T_SRV: + case DNS_T_SRV: add_assoc_string(*subarray, "type", "SRV", 1); GETSHORT(n, cp); add_assoc_long(*subarray, "pri", n); @@ -475,9 +598,7 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int cp += n; add_assoc_string(*subarray, "target", name, 1); break; -#endif -#ifdef T_NAPTR - case T_NAPTR: + case DNS_T_NAPTR: add_assoc_string(*subarray, "type", "NAPTR", 1); GETSHORT(n, cp); add_assoc_long(*subarray, "order", n); @@ -499,7 +620,6 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int cp += n; add_assoc_string(*subarray, "replacement", name, 1); break; -#endif default: cp += dlen; } @@ -563,67 +683,57 @@ PHP_FUNCTION(dns_get_record) array_init(return_value); /* - We emulate an or'ed type mask by querying type by type. (Steps 0 - NUMTYPES-1 ) - * If additional info is wanted we check again with T_ANY (step NUMTYPES / NUMTYPES+1 ) + * If additional info is wanted we check again with DNS_T_ANY (step NUMTYPES / NUMTYPES+1 ) * store_results is used to skip storing the results retrieved in step * NUMTYPES+1 when results were already fetched. - * - In case of PHP_DNS_ANY we use the directly fetch T_ANY. (step NUMTYPES+1 ) + * - In case of PHP_DNS_ANY we use the directly fetch DNS_T_ANY. (step NUMTYPES+1 ) */ for(type = (type_param==PHP_DNS_ANY ? (PHP_DNS_NUM_TYPES + 1) : 0); type < (addtl_recs ? (PHP_DNS_NUM_TYPES + 2) : PHP_DNS_NUM_TYPES) || first_query; type++) { first_query = 0; switch (type) { case 0: - type_to_fetch = type_param&PHP_DNS_A ? T_A : 0; + type_to_fetch = type_param&PHP_DNS_A ? DNS_T_A : 0; break; case 1: - type_to_fetch = type_param&PHP_DNS_NS ? T_NS : 0; + type_to_fetch = type_param&PHP_DNS_NS ? DNS_T_NS : 0; break; case 2: - type_to_fetch = type_param&PHP_DNS_CNAME ? T_CNAME : 0; + type_to_fetch = type_param&PHP_DNS_CNAME ? DNS_T_CNAME : 0; break; case 3: - type_to_fetch = type_param&PHP_DNS_SOA ? T_SOA : 0; + type_to_fetch = type_param&PHP_DNS_SOA ? DNS_T_SOA : 0; break; case 4: - type_to_fetch = type_param&PHP_DNS_PTR ? T_PTR : 0; + type_to_fetch = type_param&PHP_DNS_PTR ? DNS_T_PTR : 0; break; case 5: - type_to_fetch = type_param&PHP_DNS_HINFO ? T_HINFO : 0; + type_to_fetch = type_param&PHP_DNS_HINFO ? DNS_T_HINFO : 0; break; case 6: - type_to_fetch = type_param&PHP_DNS_MX ? T_MX : 0; + type_to_fetch = type_param&PHP_DNS_MX ? DNS_T_MX : 0; break; case 7: - type_to_fetch = type_param&PHP_DNS_TXT ? T_TXT : 0; + type_to_fetch = type_param&PHP_DNS_TXT ? DNS_T_TXT : 0; break; case 8: -#ifdef T_AAAA - type_to_fetch = type_param&PHP_DNS_AAAA ? T_AAAA : 0; + type_to_fetch = type_param&PHP_DNS_AAAA ? DNS_T_AAAA : 0; break; -#else - continue; -#endif case 9: -#ifdef T_SRV - type_to_fetch = type_param&PHP_DNS_SRV ? T_SRV : 0; + type_to_fetch = type_param&PHP_DNS_SRV ? DNS_T_SRV : 0; break; -#else - continue; -#endif case 10: -#ifdef T_NAPTR - type_to_fetch = type_param&PHP_DNS_NAPTR ? T_NAPTR : 0; + type_to_fetch = type_param&PHP_DNS_NAPTR ? DNS_T_NAPTR : 0; + break; + case 11: + type_to_fetch = type_param&PHP_DNS_A6 ? DNS_T_A6 : 0; break; -#else - continue; -#endif - case PHP_DNS_NUM_TYPES: store_results = 0; continue; default: case (PHP_DNS_NUM_TYPES + 1): - type_to_fetch = T_ANY; + type_to_fetch = DNS_T_ANY; break; } if (type_to_fetch) { @@ -682,7 +792,7 @@ PHP_FUNCTION(dns_get_record) while (ns-- > 0 && cp && cp < end) { zval *retval; - cp = php_parserr(cp, &answer, T_ANY, 1, &retval); + cp = php_parserr(cp, &answer, DNS_T_ANY, 1, &retval); if (retval != NULL) { add_next_index_zval(authns, retval); } @@ -691,7 +801,7 @@ PHP_FUNCTION(dns_get_record) while (ar-- > 0 && cp && cp < end) { zval *retval; - cp = php_parserr(cp, &answer, T_ANY, 1, &retval); + cp = php_parserr(cp, &answer, DNS_T_ANY, 1, &retval); if (retval != NULL) { add_next_index_zval(addtl, retval); } @@ -741,7 +851,7 @@ PHP_FUNCTION(dns_get_mx) array_init(mx_list); /* Go! */ - i = res_search(Z_STRVAL_P(host), C_IN, T_MX, (u_char *)&ans, sizeof(ans)); + i = res_search(Z_STRVAL_P(host), C_IN, DNS_T_MX, (u_char *)&ans, sizeof(ans)); if (i < 0) { RETURN_FALSE; } @@ -765,7 +875,7 @@ PHP_FUNCTION(dns_get_mx) GETSHORT(type, cp); cp += INT16SZ + INT32SZ; GETSHORT(i, cp); - if (type != T_MX) { + if (type != DNS_T_MX) { cp += i; continue; } -- 2.40.0