ares_parse_soa_reply.3 2.1 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980
  1. .\"
  2. .\" Copyright 1998 by the Massachusetts Institute of Technology.
  3. .\"
  4. .\" Permission to use, copy, modify, and distribute this
  5. .\" software and its documentation for any purpose and without
  6. .\" fee is hereby granted, provided that the above copyright
  7. .\" notice appear in all copies and that both that copyright
  8. .\" notice and this permission notice appear in supporting
  9. .\" documentation, and that the name of M.I.T. not be used in
  10. .\" advertising or publicity pertaining to distribution of the
  11. .\" software without specific, written prior permission.
  12. .\" M.I.T. makes no representations about the suitability of
  13. .\" this software for any purpose. It is provided "as is"
  14. .\" without express or implied warranty.
  15. .\"
  16. .TH ARES_PARSE_SOA_REPLY 3 "29 May 2012"
  17. .SH NAME
  18. ares_parse_soa_reply \- Parse a reply to a DNS query of type SOA
  19. .SH SYNOPSIS
  20. .nf
  21. .B #include <ares.h>
  22. .PP
  23. .B int ares_parse_soa_reply(const unsigned char* \fIabuf\fP, int \fIalen\fP,
  24. .B struct ares_soa_reply** \fIsoa_out\fP);
  25. .fi
  26. .SH DESCRIPTION
  27. The
  28. .B ares_parse_soa_reply
  29. function parses the response to a query of type SOA into a
  30. .IR struct\ ares_soa_reply .
  31. The parameters
  32. .I abuf
  33. and
  34. .I alen
  35. give the contents of the response. The result is stored in allocated
  36. memory and a pointer to it stored into the variable pointed to by
  37. .IR soa_out .
  38. It is the caller's responsibility to free the resulting
  39. .IR soa_out
  40. structure when it is no longer needed using the function
  41. .B ares_free_data
  42. .PP
  43. The structure
  44. .I ares_soa_reply
  45. contains the following fields:
  46. .sp
  47. .in +4n
  48. .nf
  49. struct ares_soa_reply {
  50. char *nsname;
  51. char *hostmaster;
  52. unsigned int serial;
  53. unsigned int refresh;
  54. unsigned int retry;
  55. unsigned int expire;
  56. unsigned int minttl;
  57. };
  58. .fi
  59. .in
  60. .PP
  61. .SH RETURN VALUES
  62. .B ares_parse_soa_reply
  63. can return any of the following values:
  64. .TP 15
  65. .B ARES_SUCCESS
  66. The response was successfully parsed.
  67. .TP 15
  68. .B ARES_EBADRESP
  69. The response was malformatted.
  70. .TP 15
  71. .B ARES_ENODATA
  72. The response did not contain an answer to the query.
  73. .TP 15
  74. .B ARES_ENOMEM
  75. Memory was exhausted.
  76. .SH AVAILABILITY
  77. This function was first introduced in c-ares version 1.9.0.
  78. .SH SEE ALSO
  79. .BR ares_query (3)
  80. .BR ares_free_data (3)