1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
#include "protocol.h"
#include <stdlib.h>
#include <string.h>
#include "commands.h"
#include "db.h"
#include "log.h"
#include "util.h"
#include "version.h"
static void add_error(yyjson_mut_doc *doc, yyjson_mut_val *resp,
const char *code, const char *msg,
yyjson_mut_val *details)
{
yyjson_mut_obj_add_bool(doc, resp, "ok", false);
yyjson_mut_val *e = yyjson_mut_obj(doc);
yyjson_mut_obj_add_strcpy(doc, e, "code", code);
yyjson_mut_obj_add_strcpy(doc, e, "message", msg);
if (details)
yyjson_mut_obj_add_val(doc, e, "details", details);
yyjson_mut_obj_add_val(doc, resp, "error", e);
}
static int scope_has(const char *list, const char *scope)
{
if (!list || !scope)
return 0;
size_t n = strlen(scope);
const char *p = list;
while (*p) {
const char *comma = strchr(p, ',');
size_t len = comma ? (size_t)(comma - p) : strlen(p);
if (len == n && strncmp(p, scope, n) == 0)
return 1;
if (!comma)
break;
p = comma + 1;
}
return 0;
}
static int role_rank(const char *role)
{
if (!role)
return 0;
if (strcmp(role, "viewer") == 0)
return 1;
if (strcmp(role, "bookkeeper") == 0)
return 2;
if (strcmp(role, "owner") == 0)
return 3;
return 0;
}
char *protocol_handle_line(sqlite3 *db, const char *line, size_t len)
{
yyjson_doc *doc = yyjson_read(line, len, 0);
yyjson_mut_doc *rdoc = yyjson_mut_doc_new(NULL);
yyjson_mut_val *resp = yyjson_mut_obj(rdoc);
yyjson_mut_doc_set_root(rdoc, resp);
const char *id = "";
struct req r;
memset(&r, 0, sizeof r);
char *role = NULL;
if (!doc || !yyjson_is_obj(yyjson_doc_get_root(doc))) {
yyjson_mut_obj_add_strcpy(rdoc, resp, "id", id);
add_error(rdoc, resp, "PARSE_ERROR", "request must be a JSON object",
NULL);
goto done;
}
yyjson_val *root = yyjson_doc_get_root(doc);
yyjson_val *idv = yyjson_obj_get(root, "id");
if (idv && yyjson_is_str(idv))
id = yyjson_get_str(idv);
yyjson_mut_obj_add_strcpy(rdoc, resp, "id", id);
yyjson_val *vv = yyjson_obj_get(root, "v");
int v = vv && yyjson_is_int(vv) ? yyjson_get_int(vv) : -1;
if (v != BOKF_PROTOCOL_VERSION) {
add_error(rdoc, resp, "UNSUPPORTED_VERSION",
"unsupported protocol version; this server speaks v1", NULL);
goto done;
}
yyjson_val *cmdv = yyjson_obj_get(root, "cmd");
const char *cmdname =
cmdv && yyjson_is_str(cmdv) ? yyjson_get_str(cmdv) : NULL;
if (!cmdname) {
add_error(rdoc, resp, "INVALID_ARGS", "cmd is required", NULL);
goto done;
}
const struct command *cmd = command_find(cmdname);
if (!cmd) {
add_error(rdoc, resp, "UNKNOWN_COMMAND", "unknown command", NULL);
goto done;
}
r.db = db;
r.rdoc = rdoc;
r.id = id;
r.cmd = cmdname;
r.args = yyjson_obj_get(root, "args");
yyjson_val *drv = yyjson_obj_get(root, "dry_run");
r.dry_run = drv && yyjson_is_bool(drv) && yyjson_get_bool(drv);
if (cmd->perm != PERM_PUBLIC) {
yyjson_val *sv = yyjson_obj_get(root, "session");
const char *sid = sv && yyjson_is_str(sv) ? yyjson_get_str(sv) : NULL;
r.sess = sessions_get(sid);
if (!r.sess) {
add_error(rdoc, resp, sid ? "SESSION_EXPIRED" : "AUTH_REQUIRED",
sid ? "session is invalid or expired"
: "session is required",
NULL);
goto done;
}
r.is_admin = r.sess->is_admin;
int64_t org = r.sess->active_org;
yyjson_val *ov = yyjson_obj_get(root, "org");
if (ov && yyjson_is_int(ov))
org = yyjson_get_int(ov);
if (cmd->need_org) {
if (r.sess->bound_org) {
if (org != r.sess->bound_org) {
add_error(rdoc, resp, "ORG_FORBIDDEN",
"token is bound to another org", NULL);
goto done;
}
org = r.sess->bound_org;
}
if (!org) {
add_error(rdoc, resp, "ORG_REQUIRED",
"no active org; pass org or use session.use_org",
NULL);
goto done;
}
role = db_membership_role(db, org, r.sess->user_id);
if (!role) {
add_error(rdoc, resp, "ORG_FORBIDDEN",
"not a member of this org", NULL);
goto done;
}
r.org_id = org;
r.has_org = 1;
r.role = role;
} else {
r.org_id = org;
}
int rank = role_rank(r.role);
const char *scope = perm_scope(cmd->perm);
if (cmd->perm == PERM_ADMIN && !r.is_admin) {
add_error(rdoc, resp, "FORBIDDEN", "system admin required", NULL);
goto done;
}
if (cmd->perm == PERM_WRITE && rank < 2) {
add_error(rdoc, resp, "FORBIDDEN", "bookkeeper role required",
NULL);
goto done;
}
if (cmd->perm == PERM_OWNER && rank < 3) {
add_error(rdoc, resp, "FORBIDDEN", "owner role required", NULL);
goto done;
}
if (cmd->perm != PERM_ADMIN && scope &&
!scope_has(r.sess->scopes, scope)) {
add_error(rdoc, resp, "FORBIDDEN",
"token scope does not allow this command", NULL);
goto done;
}
}
{
yyjson_mut_val *result = cmd->fn(&r);
if (!result) {
add_error(rdoc, resp, r.err_code ? r.err_code : "INTERNAL",
r.err_msg[0] ? r.err_msg : "internal error",
r.err_details);
} else {
yyjson_mut_obj_add_bool(rdoc, resp, "ok", true);
yyjson_mut_obj_add_val(rdoc, resp, "result", result);
}
}
done:
free(role);
if (doc)
yyjson_doc_free(doc);
yyjson_write_err werr;
werr.code = 0;
werr.msg = NULL;
char *out = yyjson_mut_write_opts(rdoc, 0, NULL, NULL, &werr);
if (!out)
log_error("response write failed: code=%d %s", (int)werr.code,
werr.msg ? werr.msg : "");
yyjson_mut_doc_free(rdoc);
return out ? out : xstrdup("{\"id\":\"\",\"ok\":false}");
}
|
