/* ed25519_cert.h -- generated by by Trunnel v1.4.4. * https://gitweb.torproject.org/trunnel.git * You probably shouldn't edit this file. */ #ifndef TRUNNEL_ED25519_CERT_H #define TRUNNEL_ED25519_CERT_H #include #include "trunnel.h" #define CERTEXT_SIGNED_WITH_KEY 4 #define CERTEXT_FLAG_AFFECTS_VALIDATION 1 #define LS_IPV4 0 #define LS_IPV6 1 #define LS_LEGACY_ID 2 #define LS_ED25519_ID 3 #if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_ED25519_CERT_EXTENSION) struct ed25519_cert_extension_st { uint16_t ext_length; uint8_t ext_type; uint8_t ext_flags; uint8_t un_signing_key[32]; TRUNNEL_DYNARRAY_HEAD(, uint8_t) un_unparsed; uint8_t trunnel_error_code_; }; #endif typedef struct ed25519_cert_extension_st ed25519_cert_extension_t; #if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_LINK_SPECIFIER) struct link_specifier_st { uint8_t ls_type; uint8_t ls_len; uint32_t un_ipv4_addr; uint16_t un_ipv4_port; uint8_t un_ipv6_addr[16]; uint16_t un_ipv6_port; uint8_t un_legacy_id[20]; uint8_t un_ed25519_id[32]; TRUNNEL_DYNARRAY_HEAD(, uint8_t) un_unrecognized; uint8_t trunnel_error_code_; }; #endif typedef struct link_specifier_st link_specifier_t; #if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_ED25519_CERT) struct ed25519_cert_st { uint8_t version; uint8_t cert_type; uint32_t exp_field; uint8_t cert_key_type; uint8_t certified_key[32]; uint8_t n_extensions; TRUNNEL_DYNARRAY_HEAD(, struct ed25519_cert_extension_st *) ext; uint8_t signature[64]; uint8_t trunnel_error_code_; }; #endif typedef struct ed25519_cert_st ed25519_cert_t; #if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_LINK_SPECIFIER_LIST) struct link_specifier_list_st { uint8_t n_spec; TRUNNEL_DYNARRAY_HEAD(, struct link_specifier_st *) spec; uint8_t trunnel_error_code_; }; #endif typedef struct link_specifier_list_st link_specifier_list_t; /** Return a newly allocated ed25519_cert_extension with all elements * set to zero. */ ed25519_cert_extension_t *ed25519_cert_extension_new(void); /** Release all storage held by the ed25519_cert_extension in * 'victim'. (Do nothing if 'victim' is NULL.) */ void ed25519_cert_extension_free(ed25519_cert_extension_t *victim); /** Try to parse a ed25519_cert_extension from the buffer in 'input', * using up to 'len_in' bytes from the input buffer. On success, * return the number of bytes consumed and set *output to the newly * allocated ed25519_cert_extension_t. On failure, return -2 if the * input appears truncated, and -1 if the input is otherwise invalid. */ ssize_t ed25519_cert_extension_parse(ed25519_cert_extension_t **output, const uint8_t *input, const size_t len_in); /** Return the number of bytes we expect to need to encode the * ed25519_cert_extension in 'obj'. On failure, return a negative * value. Note that this value may be an overestimate, and can even be * an underestimate for certain unencodeable objects. */ ssize_t ed25519_cert_extension_encoded_len(const ed25519_cert_extension_t *obj); /** Try to encode the ed25519_cert_extension from 'input' into the * buffer at 'output', using up to 'avail' bytes of the output buffer. * On success, return the number of bytes used. On failure, return -2 * if the buffer was not long enough, and -1 if the input was invalid. */ ssize_t ed25519_cert_extension_encode(uint8_t *output, size_t avail, const ed25519_cert_extension_t *input); /** Check whether the internal state of the ed25519_cert_extension in * 'obj' is consistent. Return NULL if it is, and a short message if * it is not. */ const char *ed25519_cert_extension_check(const ed25519_cert_extension_t *obj); /** Clear any errors that were set on the object 'obj' by its setter * functions. Return true iff errors were cleared. */ int ed25519_cert_extension_clear_errors(ed25519_cert_extension_t *obj); /** Return the value of the ext_length field of the * ed25519_cert_extension_t in 'inp' */ uint16_t ed25519_cert_extension_get_ext_length(ed25519_cert_extension_t *inp); /** Set the value of the ext_length field of the * ed25519_cert_extension_t in 'inp' to 'val'. Return 0 on success; * return -1 and set the error code on 'inp' on failure. */ int ed25519_cert_extension_set_ext_length(ed25519_cert_extension_t *inp, uint16_t val); /** Return the value of the ext_type field of the * ed25519_cert_extension_t in 'inp' */ uint8_t ed25519_cert_extension_get_ext_type(ed25519_cert_extension_t *inp); /** Set the value of the ext_type field of the * ed25519_cert_extension_t in 'inp' to 'val'. Return 0 on success; * return -1 and set the error code on 'inp' on failure. */ int ed25519_cert_extension_set_ext_type(ed25519_cert_extension_t *inp, uint8_t val); /** Return the value of the ext_flags field of the * ed25519_cert_extension_t in 'inp' */ uint8_t ed25519_cert_extension_get_ext_flags(ed25519_cert_extension_t *inp); /** Set the value of the ext_flags field of the * ed25519_cert_extension_t in 'inp' to 'val'. Return 0 on success; * return -1 and set the error code on 'inp' on failure. */ int ed25519_cert_extension_set_ext_flags(ed25519_cert_extension_t *inp, uint8_t val); /** Return the (constant) length of the array holding the * un_signing_key field of the ed25519_cert_extension_t in 'inp'. */ size_t ed25519_cert_extension_getlen_un_signing_key(const ed25519_cert_extension_t *inp); /** Return the element at position 'idx' of the fixed array field * un_signing_key of the ed25519_cert_extension_t in 'inp'. */ uint8_t ed25519_cert_extension_get_un_signing_key(const ed25519_cert_extension_t *inp, size_t idx); /** Change the element at position 'idx' of the fixed array field * un_signing_key of the ed25519_cert_extension_t in 'inp', so that it * will hold the value 'elt'. */ int ed25519_cert_extension_set_un_signing_key(ed25519_cert_extension_t *inp, size_t idx, uint8_t elt); /** Return a pointer to the 32-element array field un_signing_key of * 'inp'. */ uint8_t * ed25519_cert_extension_getarray_un_signing_key(ed25519_cert_extension_t *inp); /** Return the length of the dynamic array holding the un_unparsed * field of the ed25519_cert_extension_t in 'inp'. */ size_t ed25519_cert_extension_getlen_un_unparsed(const ed25519_cert_extension_t *inp); /** Return the element at position 'idx' of the dynamic array field * un_unparsed of the ed25519_cert_extension_t in 'inp'. */ uint8_t ed25519_cert_extension_get_un_unparsed(ed25519_cert_extension_t *inp, size_t idx); /** Change the element at position 'idx' of the dynamic array field * un_unparsed of the ed25519_cert_extension_t in 'inp', so that it * will hold the value 'elt'. */ int ed25519_cert_extension_set_un_unparsed(ed25519_cert_extension_t *inp, size_t idx, uint8_t elt); /** Append a new element 'elt' to the dynamic array field un_unparsed * of the ed25519_cert_extension_t in 'inp'. */ int ed25519_cert_extension_add_un_unparsed(ed25519_cert_extension_t *inp, uint8_t elt); /** Return a pointer to the variable-length array field un_unparsed of * 'inp'. */ uint8_t * ed25519_cert_extension_getarray_un_unparsed(ed25519_cert_extension_t *inp); /** Change the length of the variable-length array field un_unparsed * of 'inp' to 'newlen'.Fill extra elements with 0. Return 0 on * success; return -1 and set the error code on 'inp' on failure. */ int ed25519_cert_extension_setlen_un_unparsed(ed25519_cert_extension_t *inp, size_t newlen); /** Return a newly allocated link_specifier with all elements set to * zero. */ link_specifier_t *link_specifier_new(void); /** Release all storage held by the link_specifier in 'victim'. (Do * nothing if 'victim' is NULL.) */ void link_specifier_free(link_specifier_t *victim); /** Try to parse a link_specifier from the buffer in 'input', using up * to 'len_in' bytes from the input buffer. On success, return the * number of bytes consumed and set *output to the newly allocated * link_specifier_t. On failure, return -2 if the input appears * truncated, and -1 if the input is otherwise invalid. */ ssize_t link_specifier_parse(link_specifier_t **output, const uint8_t *input, const size_t len_in); /** Return the number of bytes we expect to need to encode the * link_specifier in 'obj'. On failure, return a negative value. Note * that this value may be an overestimate, and can even be an * underestimate for certain unencodeable objects. */ ssize_t link_specifier_encoded_len(const link_specifier_t *obj); /** Try to encode the link_specifier from 'input' into the buffer at * 'output', using up to 'avail' bytes of the output buffer. On * success, return the number of bytes used. On failure, return -2 if * the buffer was not long enough, and -1 if the input was invalid. */ ssize_t link_specifier_encode(uint8_t *output, size_t avail, const link_specifier_t *input); /** Check whether the internal state of the link_specifier in 'obj' is * consistent. Return NULL if it is, and a short message if it is not. */ const char *link_specifier_check(const link_specifier_t *obj); /** Clear any errors that were set on the object 'obj' by its setter * functions. Return true iff errors were cleared. */ int link_specifier_clear_errors(link_specifier_t *obj); /** Return the value of the ls_type field of the link_specifier_t in * 'inp' */ uint8_t link_specifier_get_ls_type(link_specifier_t *inp); /** Set the value of the ls_type field of the link_specifier_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int link_specifier_set_ls_type(link_specifier_t *inp, uint8_t val); /** Return the value of the ls_len field of the link_specifier_t in * 'inp' */ uint8_t link_specifier_get_ls_len(link_specifier_t *inp); /** Set the value of the ls_len field of the link_specifier_t in 'inp' * to 'val'. Return 0 on success; return -1 and set the error code on * 'inp' on failure. */ int link_specifier_set_ls_len(link_specifier_t *inp, uint8_t val); /** Return the value of the un_ipv4_addr field of the link_specifier_t * in 'inp' */ uint32_t link_specifier_get_un_ipv4_addr(link_specifier_t *inp); /** Set the value of the un_ipv4_addr field of the link_specifier_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int link_specifier_set_un_ipv4_addr(link_specifier_t *inp, uint32_t val); /** Return the value of the un_ipv4_port field of the link_specifier_t * in 'inp' */ uint16_t link_specifier_get_un_ipv4_port(link_specifier_t *inp); /** Set the value of the un_ipv4_port field of the link_specifier_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int link_specifier_set_un_ipv4_port(link_specifier_t *inp, uint16_t val); /** Return the (constant) length of the array holding the un_ipv6_addr * field of the link_specifier_t in 'inp'. */ size_t link_specifier_getlen_un_ipv6_addr(const link_specifier_t *inp); /** Return the element at position 'idx' of the fixed array field * un_ipv6_addr of the link_specifier_t in 'inp'. */ uint8_t link_specifier_get_un_ipv6_addr(const link_specifier_t *inp, size_t idx); /** Change the element at position 'idx' of the fixed array field * un_ipv6_addr of the link_specifier_t in 'inp', so that it will hold * the value 'elt'. */ int link_specifier_set_un_ipv6_addr(link_specifier_t *inp, size_t idx, uint8_t elt); /** Return a pointer to the 16-element array field un_ipv6_addr of * 'inp'. */ uint8_t * link_specifier_getarray_un_ipv6_addr(link_specifier_t *inp); /** Return the value of the un_ipv6_port field of the link_specifier_t * in 'inp' */ uint16_t link_specifier_get_un_ipv6_port(link_specifier_t *inp); /** Set the value of the un_ipv6_port field of the link_specifier_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int link_specifier_set_un_ipv6_port(link_specifier_t *inp, uint16_t val); /** Return the (constant) length of the array holding the un_legacy_id * field of the link_specifier_t in 'inp'. */ size_t link_specifier_getlen_un_legacy_id(const link_specifier_t *inp); /** Return the element at position 'idx' of the fixed array field * un_legacy_id of the link_specifier_t in 'inp'. */ uint8_t link_specifier_get_un_legacy_id(const link_specifier_t *inp, size_t idx); /** Change the element at position 'idx' of the fixed array field * un_legacy_id of the link_specifier_t in 'inp', so that it will hold * the value 'elt'. */ int link_specifier_set_un_legacy_id(link_specifier_t *inp, size_t idx, uint8_t elt); /** Return a pointer to the 20-element array field un_legacy_id of * 'inp'. */ uint8_t * link_specifier_getarray_un_legacy_id(link_specifier_t *inp); /** Return the (constant) length of the array holding the * un_ed25519_id field of the link_specifier_t in 'inp'. */ size_t link_specifier_getlen_un_ed25519_id(const link_specifier_t *inp); /** Return the element at position 'idx' of the fixed array field * un_ed25519_id of the link_specifier_t in 'inp'. */ uint8_t link_specifier_get_un_ed25519_id(const link_specifier_t *inp, size_t idx); /** Change the element at position 'idx' of the fixed array field * un_ed25519_id of the link_specifier_t in 'inp', so that it will * hold the value 'elt'. */ int link_specifier_set_un_ed25519_id(link_specifier_t *inp, size_t idx, uint8_t elt); /** Return a pointer to the 32-element array field un_ed25519_id of * 'inp'. */ uint8_t * link_specifier_getarray_un_ed25519_id(link_specifier_t *inp); /** Return the length of the dynamic array holding the un_unrecognized * field of the link_specifier_t in 'inp'. */ size_t link_specifier_getlen_un_unrecognized(const link_specifier_t *inp); /** Return the element at position 'idx' of the dynamic array field * un_unrecognized of the link_specifier_t in 'inp'. */ uint8_t link_specifier_get_un_unrecognized(link_specifier_t *inp, size_t idx); /** Change the element at position 'idx' of the dynamic array field * un_unrecognized of the link_specifier_t in 'inp', so that it will * hold the value 'elt'. */ int link_specifier_set_un_unrecognized(link_specifier_t *inp, size_t idx, uint8_t elt); /** Append a new element 'elt' to the dynamic array field * un_unrecognized of the link_specifier_t in 'inp'. */ int link_specifier_add_un_unrecognized(link_specifier_t *inp, uint8_t elt); /** Return a pointer to the variable-length array field * un_unrecognized of 'inp'. */ uint8_t * link_specifier_getarray_un_unrecognized(link_specifier_t *inp); /** Change the length of the variable-length array field * un_unrecognized of 'inp' to 'newlen'.Fill extra elements with 0. * Return 0 on success; return -1 and set the error code on 'inp' on * failure. */ int link_specifier_setlen_un_unrecognized(link_specifier_t *inp, size_t newlen); /** Return a newly allocated ed25519_cert with all elements set to * zero. */ ed25519_cert_t *ed25519_cert_new(void); /** Release all storage held by the ed25519_cert in 'victim'. (Do * nothing if 'victim' is NULL.) */ void ed25519_cert_free(ed25519_cert_t *victim); /** Try to parse a ed25519_cert from the buffer in 'input', using up * to 'len_in' bytes from the input buffer. On success, return the * number of bytes consumed and set *output to the newly allocated * ed25519_cert_t. On failure, return -2 if the input appears * truncated, and -1 if the input is otherwise invalid. */ ssize_t ed25519_cert_parse(ed25519_cert_t **output, const uint8_t *input, const size_t len_in); /** Return the number of bytes we expect to need to encode the * ed25519_cert in 'obj'. On failure, return a negative value. Note * that this value may be an overestimate, and can even be an * underestimate for certain unencodeable objects. */ ssize_t ed25519_cert_encoded_len(const ed25519_cert_t *obj); /** Try to encode the ed25519_cert from 'input' into the buffer at * 'output', using up to 'avail' bytes of the output buffer. On * success, return the number of bytes used. On failure, return -2 if * the buffer was not long enough, and -1 if the input was invalid. */ ssize_t ed25519_cert_encode(uint8_t *output, size_t avail, const ed25519_cert_t *input); /** Check whether the internal state of the ed25519_cert in 'obj' is * consistent. Return NULL if it is, and a short message if it is not. */ const char *ed25519_cert_check(const ed25519_cert_t *obj); /** Clear any errors that were set on the object 'obj' by its setter * functions. Return true iff errors were cleared. */ int ed25519_cert_clear_errors(ed25519_cert_t *obj); /** Return the value of the version field of the ed25519_cert_t in * 'inp' */ uint8_t ed25519_cert_get_version(ed25519_cert_t *inp); /** Set the value of the version field of the ed25519_cert_t in 'inp' * to 'val'. Return 0 on success; return -1 and set the error code on * 'inp' on failure. */ int ed25519_cert_set_version(ed25519_cert_t *inp, uint8_t val); /** Return the value of the cert_type field of the ed25519_cert_t in * 'inp' */ uint8_t ed25519_cert_get_cert_type(ed25519_cert_t *inp); /** Set the value of the cert_type field of the ed25519_cert_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int ed25519_cert_set_cert_type(ed25519_cert_t *inp, uint8_t val); /** Return the value of the exp_field field of the ed25519_cert_t in * 'inp' */ uint32_t ed25519_cert_get_exp_field(ed25519_cert_t *inp); /** Set the value of the exp_field field of the ed25519_cert_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int ed25519_cert_set_exp_field(ed25519_cert_t *inp, uint32_t val); /** Return the value of the cert_key_type field of the ed25519_cert_t * in 'inp' */ uint8_t ed25519_cert_get_cert_key_type(ed25519_cert_t *inp); /** Set the value of the cert_key_type field of the ed25519_cert_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int ed25519_cert_set_cert_key_type(ed25519_cert_t *inp, uint8_t val); /** Return the (constant) length of the array holding the * certified_key field of the ed25519_cert_t in 'inp'. */ size_t ed25519_cert_getlen_certified_key(const ed25519_cert_t *inp); /** Return the element at position 'idx' of the fixed array field * certified_key of the ed25519_cert_t in 'inp'. */ uint8_t ed25519_cert_get_certified_key(const ed25519_cert_t *inp, size_t idx); /** Change the element at position 'idx' of the fixed array field * certified_key of the ed25519_cert_t in 'inp', so that it will hold * the value 'elt'. */ int ed25519_cert_set_certified_key(ed25519_cert_t *inp, size_t idx, uint8_t elt); /** Return a pointer to the 32-element array field certified_key of * 'inp'. */ uint8_t * ed25519_cert_getarray_certified_key(ed25519_cert_t *inp); /** Return the value of the n_extensions field of the ed25519_cert_t * in 'inp' */ uint8_t ed25519_cert_get_n_extensions(ed25519_cert_t *inp); /** Set the value of the n_extensions field of the ed25519_cert_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int ed25519_cert_set_n_extensions(ed25519_cert_t *inp, uint8_t val); /** Return the length of the dynamic array holding the ext field of * the ed25519_cert_t in 'inp'. */ size_t ed25519_cert_getlen_ext(const ed25519_cert_t *inp); /** Return the element at position 'idx' of the dynamic array field * ext of the ed25519_cert_t in 'inp'. */ struct ed25519_cert_extension_st * ed25519_cert_get_ext(ed25519_cert_t *inp, size_t idx); /** Change the element at position 'idx' of the dynamic array field * ext of the ed25519_cert_t in 'inp', so that it will hold the value * 'elt'. Free the previous value, if any. */ int ed25519_cert_set_ext(ed25519_cert_t *inp, size_t idx, struct ed25519_cert_extension_st * elt); /** As ed25519_cert_set_ext, but does not free the previous value. */ int ed25519_cert_set0_ext(ed25519_cert_t *inp, size_t idx, struct ed25519_cert_extension_st * elt); /** Append a new element 'elt' to the dynamic array field ext of the * ed25519_cert_t in 'inp'. */ int ed25519_cert_add_ext(ed25519_cert_t *inp, struct ed25519_cert_extension_st * elt); /** Return a pointer to the variable-length array field ext of 'inp'. */ struct ed25519_cert_extension_st * * ed25519_cert_getarray_ext(ed25519_cert_t *inp); /** Change the length of the variable-length array field ext of 'inp' * to 'newlen'.Fill extra elements with NULL; free removed elements. * Return 0 on success; return -1 and set the error code on 'inp' on * failure. */ int ed25519_cert_setlen_ext(ed25519_cert_t *inp, size_t newlen); /** Return the (constant) length of the array holding the signature * field of the ed25519_cert_t in 'inp'. */ size_t ed25519_cert_getlen_signature(const ed25519_cert_t *inp); /** Return the element at position 'idx' of the fixed array field * signature of the ed25519_cert_t in 'inp'. */ uint8_t ed25519_cert_get_signature(const ed25519_cert_t *inp, size_t idx); /** Change the element at position 'idx' of the fixed array field * signature of the ed25519_cert_t in 'inp', so that it will hold the * value 'elt'. */ int ed25519_cert_set_signature(ed25519_cert_t *inp, size_t idx, uint8_t elt); /** Return a pointer to the 64-element array field signature of 'inp'. */ uint8_t * ed25519_cert_getarray_signature(ed25519_cert_t *inp); /** Return a newly allocated link_specifier_list with all elements set * to zero. */ link_specifier_list_t *link_specifier_list_new(void); /** Release all storage held by the link_specifier_list in 'victim'. * (Do nothing if 'victim' is NULL.) */ void link_specifier_list_free(link_specifier_list_t *victim); /** Try to parse a link_specifier_list from the buffer in 'input', * using up to 'len_in' bytes from the input buffer. On success, * return the number of bytes consumed and set *output to the newly * allocated link_specifier_list_t. On failure, return -2 if the input * appears truncated, and -1 if the input is otherwise invalid. */ ssize_t link_specifier_list_parse(link_specifier_list_t **output, const uint8_t *input, const size_t len_in); /** Return the number of bytes we expect to need to encode the * link_specifier_list in 'obj'. On failure, return a negative value. * Note that this value may be an overestimate, and can even be an * underestimate for certain unencodeable objects. */ ssize_t link_specifier_list_encoded_len(const link_specifier_list_t *obj); /** Try to encode the link_specifier_list from 'input' into the buffer * at 'output', using up to 'avail' bytes of the output buffer. On * success, return the number of bytes used. On failure, return -2 if * the buffer was not long enough, and -1 if the input was invalid. */ ssize_t link_specifier_list_encode(uint8_t *output, size_t avail, const link_specifier_list_t *input); /** Check whether the internal state of the link_specifier_list in * 'obj' is consistent. Return NULL if it is, and a short message if * it is not. */ const char *link_specifier_list_check(const link_specifier_list_t *obj); /** Clear any errors that were set on the object 'obj' by its setter * functions. Return true iff errors were cleared. */ int link_specifier_list_clear_errors(link_specifier_list_t *obj); /** Return the value of the n_spec field of the link_specifier_list_t * in 'inp' */ uint8_t link_specifier_list_get_n_spec(link_specifier_list_t *inp); /** Set the value of the n_spec field of the link_specifier_list_t in * 'inp' to 'val'. Return 0 on success; return -1 and set the error * code on 'inp' on failure. */ int link_specifier_list_set_n_spec(link_specifier_list_t *inp, uint8_t val); /** Return the length of the dynamic array holding the spec field of * the link_specifier_list_t in 'inp'. */ size_t link_specifier_list_getlen_spec(const link_specifier_list_t *inp); /** Return the element at position 'idx' of the dynamic array field * spec of the link_specifier_list_t in 'inp'. */ struct link_specifier_st * link_specifier_list_get_spec(link_specifier_list_t *inp, size_t idx); /** Change the element at position 'idx' of the dynamic array field * spec of the link_specifier_list_t in 'inp', so that it will hold * the value 'elt'. Free the previous value, if any. */ int link_specifier_list_set_spec(link_specifier_list_t *inp, size_t idx, struct link_specifier_st * elt); /** As link_specifier_list_set_spec, but does not free the previous * value. */ int link_specifier_list_set0_spec(link_specifier_list_t *inp, size_t idx, struct link_specifier_st * elt); /** Append a new element 'elt' to the dynamic array field spec of the * link_specifier_list_t in 'inp'. */ int link_specifier_list_add_spec(link_specifier_list_t *inp, struct link_specifier_st * elt); /** Return a pointer to the variable-length array field spec of 'inp'. */ struct link_specifier_st * * link_specifier_list_getarray_spec(link_specifier_list_t *inp); /** Change the length of the variable-length array field spec of 'inp' * to 'newlen'.Fill extra elements with NULL; free removed elements. * Return 0 on success; return -1 and set the error code on 'inp' on * failure. */ int link_specifier_list_setlen_spec(link_specifier_list_t *inp, size_t newlen); #endif