mirror of
https://github.com/ilyakooo0/urbit.git
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95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
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/* Copyright StrongLoop, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef S5_H_
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#define S5_H_
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#include <stddef.h>
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#include <stdint.h>
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#define S5_ERR_MAP(V) \
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V(-1, bad_version, "Bad protocol version.") \
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V(-2, bad_cmd, "Bad protocol command.") \
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V(-3, bad_atyp, "Bad address type.") \
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V(0, ok, "No error.") \
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V(1, auth_select, "Select authentication method.") \
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V(2, auth_verify, "Verify authentication.") \
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V(3, exec_cmd, "Execute command.") \
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typedef enum {
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#define S5_ERR_GEN(code, name, _) s5_ ## name = code,
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S5_ERR_MAP(S5_ERR_GEN)
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#undef S5_ERR_GEN
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s5_max_errors
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} s5_err;
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typedef enum {
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S5_AUTH_NONE = 1 << 0,
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S5_AUTH_GSSAPI = 1 << 1,
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S5_AUTH_PASSWD = 1 << 2
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} s5_auth_method;
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typedef enum {
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s5_auth_allow,
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s5_auth_deny
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} s5_auth_result;
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typedef enum {
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s5_atyp_ipv4,
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s5_atyp_ipv6,
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s5_atyp_host
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} s5_atyp;
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typedef enum {
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s5_cmd_tcp_connect,
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s5_cmd_tcp_bind,
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s5_cmd_udp_assoc
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} s5_cmd;
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typedef struct {
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uint32_t arg0; /* Scratch space for the state machine. */
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uint32_t arg1; /* Scratch space for the state machine. */
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uint8_t state;
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uint8_t methods;
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uint8_t cmd;
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uint8_t atyp;
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uint8_t userlen;
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uint8_t passlen;
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uint16_t dport;
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uint8_t username[257];
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uint8_t password[257];
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uint8_t daddr[257]; /* TODO(bnoordhuis) Merge with username/password. */
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} s5_ctx;
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void s5_init(s5_ctx *ctx);
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s5_err s5_parse(s5_ctx *cx, uint8_t **data, size_t *size);
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/* Only call after s5_parse() has returned s5_want_auth_method. */
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unsigned int s5_auth_methods(const s5_ctx *cx);
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/* Call after s5_parse() has returned s5_want_auth_method. */
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int s5_select_auth(s5_ctx *cx, s5_auth_method method);
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const char *s5_strerror(s5_err err);
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#endif /* S5_H_ */
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