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gnupg-2.0.16/common/pka.c
| Context not available. | |||||
| return buffer; | return buffer; | ||||
| #else /*!USE_ADNS*/ | #else /*!USE_ADNS*/ | ||||
| unsigned char answer[PACKETSZ]; | union | ||||
| { | |||||
| signed char p[PACKETSZ]; | |||||
| HEADER h; | |||||
| } answer; | |||||
| int anslen; | int anslen; | ||||
| int qdcount, ancount, nscount, arcount; | int qdcount, ancount, nscount, arcount; | ||||
| int rc; | int rc; | ||||
| Context not available. | |||||
| memcpy (name, address, domain - address); | memcpy (name, address, domain - address); | ||||
| strcpy (stpcpy (name + (domain-address), "._pka."), domain+1); | strcpy (stpcpy (name + (domain-address), "._pka."), domain+1); | ||||
| anslen = res_query (name, C_IN, T_TXT, answer, PACKETSZ); | anslen = res_query (name, C_IN, T_TXT, answer.p, PACKETSZ); | ||||
| xfree (name); | xfree (name); | ||||
| if (anslen < sizeof(HEADER)) | if (anslen < sizeof(HEADER)) | ||||
| return NULL; /* DNS resolver returned a too short answer. */ | return NULL; /* DNS resolver returned a too short answer. */ | ||||
| if ( (rc=((HEADER*)answer)->rcode) != NOERROR ) | if ( (rc=answer.h.rcode) != NOERROR ) | ||||
| return NULL; /* DNS resolver returned an error. */ | return NULL; /* DNS resolver returned an error. */ | ||||
| /* We assume that PACKETSZ is large enough and don't do dynmically | /* We assume that PACKETSZ is large enough and don't do dynmically | ||||
| Context not available. | |||||
| if (anslen > PACKETSZ) | if (anslen > PACKETSZ) | ||||
| return NULL; /* DNS resolver returned a too long answer */ | return NULL; /* DNS resolver returned a too long answer */ | ||||
| qdcount = ntohs (((HEADER*)answer)->qdcount); | qdcount = ntohs (answer.h.qdcount); | ||||
| ancount = ntohs (((HEADER*)answer)->ancount); | ancount = ntohs (answer.h.ancount); | ||||
| nscount = ntohs (((HEADER*)answer)->nscount); | nscount = ntohs (answer.h.nscount); | ||||
| arcount = ntohs (((HEADER*)answer)->arcount); | arcount = ntohs (answer.h.arcount); | ||||
| if (!ancount) | if (!ancount) | ||||
| return NULL; /* Got no answer. */ | return NULL; /* Got no answer. */ | ||||
| p = answer + sizeof (HEADER); | p = answer.p + sizeof (HEADER); | ||||
| pend = answer + anslen; /* Actually points directly behind the buffer. */ | pend = answer.p + anslen; /* Actually points directly behind the buffer. */ | ||||
| while (qdcount-- && p < pend) | while (qdcount-- && p < pend) | ||||
| { | { | ||||
| Context not available. | |||||