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
|
/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/auth/credentials.h>
#include <aws/common/command_line_parser.h>
#include <aws/common/condition_variable.h>
#include <aws/common/mutex.h>
#include <aws/common/zero.h>
#include <aws/io/channel_bootstrap.h>
#include <aws/io/event_loop.h>
#include <aws/io/logging.h>
#include <aws/io/uri.h>
#include "app_ctx.h"
#include <stdio.h>
int s3_ls_main(int argc, char *const argv[], const char *command_name, void *user_data);
int s3_cp_main(int argc, char *const argv[], const char *command_name, void *user_data);
int s3_compute_platform_info_main(int argc, char *const argv[], const char *command_name, void *user_data);
static struct aws_cli_subcommand_dispatch s_dispatch_table[] = {
{
.command_name = "ls",
.subcommand_fn = s3_ls_main,
},
{
.command_name = "cp",
.subcommand_fn = s3_cp_main,
},
{
.command_name = "platform-info",
.subcommand_fn = s3_compute_platform_info_main,
},
};
static void s_usage(int exit_code) {
FILE *output = exit_code == 0 ? stdout : stderr;
fprintf(output, "usage: s3 <command> <options>\n");
fprintf(output, " available commands:\n");
for (size_t i = 0; i < AWS_ARRAY_SIZE(s_dispatch_table); ++i) {
fprintf(output, " %s\n", s_dispatch_table[i].command_name);
}
fflush(output);
exit(exit_code);
}
static void s_setup_logger(struct app_ctx *app_ctx) {
struct aws_logger_standard_options logger_options = {
.level = app_ctx->log_level,
.file = stderr,
};
aws_logger_init_standard(&app_ctx->logger, app_ctx->allocator, &logger_options);
aws_logger_set(&app_ctx->logger);
}
static struct aws_cli_option s_long_options[] = {
{"region", AWS_CLI_OPTIONS_REQUIRED_ARGUMENT, NULL, 'r'},
{"verbose", AWS_CLI_OPTIONS_REQUIRED_ARGUMENT, NULL, 'v'},
{"help", AWS_CLI_OPTIONS_NO_ARGUMENT, NULL, 'h'},
/* Per getopt(3) the last element of the array has to be filled with all zeros */
{NULL, AWS_CLI_OPTIONS_NO_ARGUMENT, NULL, 0},
};
static void s_parse_app_ctx(int argc, char *const argv[], struct app_ctx *app_ctx) {
while (true) {
int option_index = 0;
int c = aws_cli_getopt_long(argc, argv, "r:v:h", s_long_options, &option_index);
if (c == -1) {
break;
}
switch (c) {
case 0:
/* getopt_long() returns 0 if an option.flag is non-null */
break;
case 'r':
app_ctx->region = aws_cli_optarg;
break;
case 'v':
if (!strcmp(aws_cli_optarg, "TRACE")) {
app_ctx->log_level = AWS_LL_TRACE;
} else if (!strcmp(aws_cli_optarg, "INFO")) {
app_ctx->log_level = AWS_LL_INFO;
} else if (!strcmp(aws_cli_optarg, "DEBUG")) {
app_ctx->log_level = AWS_LL_DEBUG;
} else if (!strcmp(aws_cli_optarg, "ERROR")) {
app_ctx->log_level = AWS_LL_ERROR;
} else {
fprintf(stderr, "unsupported log level %s.\n", aws_cli_optarg);
s_usage(1);
}
break;
case 'h':
app_ctx->help_requested = true;
break;
default:
break;
}
}
if (!app_ctx->help_requested) {
if (app_ctx->log_level != AWS_LOG_LEVEL_NONE) {
s_setup_logger(app_ctx);
}
}
/* reset for the next parser */
aws_cli_reset_state();
/* signing config */
aws_s3_init_default_signing_config(
&app_ctx->signing_config, aws_byte_cursor_from_c_str(app_ctx->region), app_ctx->credentials_provider);
app_ctx->signing_config.flags.use_double_uri_encode = false;
/* s3 client */
struct aws_s3_client_config client_config;
AWS_ZERO_STRUCT(client_config);
client_config.client_bootstrap = app_ctx->client_bootstrap;
client_config.region = aws_byte_cursor_from_c_str(app_ctx->region);
client_config.signing_config = &app_ctx->signing_config;
app_ctx->client = aws_s3_client_new(app_ctx->allocator, &client_config);
}
int main(int argc, char *argv[]) {
struct aws_allocator *allocator = aws_default_allocator();
aws_s3_library_init(allocator);
struct app_ctx app_ctx;
AWS_ZERO_STRUCT(app_ctx);
app_ctx.allocator = allocator;
app_ctx.c_var = (struct aws_condition_variable)AWS_CONDITION_VARIABLE_INIT;
aws_mutex_init(&app_ctx.mutex);
/* event loop */
struct aws_event_loop_group *event_loop_group = aws_event_loop_group_new_default(allocator, 0, NULL);
/* resolver */
struct aws_host_resolver_default_options resolver_options = {
.el_group = event_loop_group,
.max_entries = 8,
};
struct aws_host_resolver *resolver = aws_host_resolver_new_default(allocator, &resolver_options);
/* client bootstrap */
struct aws_client_bootstrap_options bootstrap_options = {
.event_loop_group = event_loop_group,
.host_resolver = resolver,
};
app_ctx.client_bootstrap = aws_client_bootstrap_new(allocator, &bootstrap_options);
if (app_ctx.client_bootstrap == NULL) {
printf("ERROR initializing client bootstrap\n");
return -1;
}
/* credentials */
struct aws_credentials_provider_chain_default_options credentials_provider_options;
AWS_ZERO_STRUCT(credentials_provider_options);
credentials_provider_options.bootstrap = app_ctx.client_bootstrap;
app_ctx.credentials_provider = aws_credentials_provider_new_chain_default(allocator, &credentials_provider_options);
s_parse_app_ctx(argc, argv, &app_ctx);
int dispatch_return_code =
aws_cli_dispatch_on_subcommand(argc, argv, s_dispatch_table, AWS_ARRAY_SIZE(s_dispatch_table), &app_ctx);
if (dispatch_return_code &&
(aws_last_error() == AWS_ERROR_INVALID_ARGUMENT || aws_last_error() == AWS_ERROR_UNIMPLEMENTED)) {
s_usage(app_ctx.help_requested == true ? 0 : 1);
}
/* release resources */
aws_s3_client_release(app_ctx.client);
aws_credentials_provider_release(app_ctx.credentials_provider);
aws_client_bootstrap_release(app_ctx.client_bootstrap);
aws_host_resolver_release(resolver);
aws_event_loop_group_release(event_loop_group);
aws_mutex_clean_up(&app_ctx.mutex);
aws_s3_library_clean_up();
return dispatch_return_code;
}
|
