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feat(ai): add OpenAI and custom API provider support
- Expand AI provider support to include OpenAI (gpt-4o, gpt-4o-mini) and custom OpenAI-compatible APIs - Add support for configuring AI API base URL and skipping SSL verification - Update documentation to list all supported AI providers and clarify configuration options with examples - Refactor AI client initialization to fallback on OpenAI-compatible API for unknown models - Add OpenAI client implementation using openai-go library - Update tests to validate OpenAI-compatible fallback behavior - Add openai-go dependency to go.mod Signed-off-by: appleboy <[email protected]>
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README.md

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@@ -256,17 +256,52 @@ gosec -exclude-generated ./...
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```
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### Auto fixing vulnerabilities
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gosec can suggest fixes based on AI recommendation. It will call an AI API to receive a suggestion for a security finding.
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You can enable this feature by providing the following command line arguments:
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- `ai-api-provider`: the name of the AI API provider, currently only `gemini`is supported.
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- `ai-api-key` or set the environment variable `GOSEC_AI_API_KEY`: the key to access the AI API,
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For gemini, you can create an API key following [these instructions](https://ai.google.dev/gemini-api/docs/api-key).
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- `ai-endpoint`: the endpoint of the AI provider, this is optional argument.
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- `ai-api-provider`: the name of the AI API provider. Supported providers:
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- **Gemini**: `gemini-2.5-pro`, `gemini-2.5-flash`, `gemini-2.5-flash-lite`, `gemini-2.0-flash`, `gemini-2.0-flash-lite` (default)
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- **Claude**: `claude-sonnet-4-0` (default), `claude-opus-4-0`, `claude-opus-4-1`, `claude-sonnet-3-7`
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- **OpenAI**: `gpt-4o` (default), `gpt-4o-mini`
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- **Custom OpenAI-compatible**: Any custom model name (requires `ai-base-url`)
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- `ai-api-key` or set the environment variable `GOSEC_AI_API_KEY`: the key to access the AI API
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- For Gemini, you can create an API key following [these instructions](https://ai.google.dev/gemini-api/docs/api-key)
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- For Claude, get your API key from [Anthropic Console](https://console.anthropic.com/)
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- For OpenAI, get your API key from [OpenAI Platform](https://platform.openai.com/api-keys)
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- `ai-base-url`: (optional) custom base URL for OpenAI-compatible APIs (e.g., Azure OpenAI, LocalAI, Ollama)
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- `ai-skip-ssl`: (optional) skip SSL certificate verification for AI API (useful for self-signed certificates)
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**Examples:**
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```bash
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gosec -ai-api-provider="gemini" -ai-api-key="your_key" ./...
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# Using Gemini
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gosec -ai-api-provider="gemini-2.0-flash" -ai-api-key="your_key" ./...
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# Using Claude
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gosec -ai-api-provider="claude-sonnet-4-0" -ai-api-key="your_key" ./...
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# Using OpenAI
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gosec -ai-api-provider="gpt-4o" -ai-api-key="your_key" ./...
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# Using Azure OpenAI
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gosec -ai-api-provider="gpt-4o" \
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-ai-api-key="your_azure_key" \
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-ai-base-url="https://your-resource.openai.azure.com/openai/deployments/your-deployment" \
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./...
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# Using local Ollama with custom model
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gosec -ai-api-provider="llama3.2" \
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-ai-base-url="http://localhost:11434/v1" \
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./...
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# Using self-signed certificate API
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gosec -ai-api-provider="custom-model" \
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-ai-api-key="your_key" \
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-ai-base-url="https://internal-api.company.com/v1" \
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-ai-skip-ssl \
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./...
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```
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### Annotating code

autofix/ai.go

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@@ -13,7 +13,8 @@ import (
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const (
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AIProviderFlagHelp = `AI API provider to generate auto fixes to issues. Valid options are:
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- gemini-2.5-pro, gemini-2.5-flash, gemini-2.5-flash-lite, gemini-2.0-flash, gemini-2.0-flash-lite (gemini, default);
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- claude-sonnet-4-0 (claude, default), claude-opus-4-0, claude-opus-4-1, claude-sonnet-3-7`
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- claude-sonnet-4-0 (claude, default), claude-opus-4-0, claude-opus-4-1, claude-sonnet-3-7;
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- gpt-4o (openai, default), gpt-4o-mini`
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AIPrompt = `Provide a brief explanation and a solution to fix this security issue
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in Go programming language: %q.
@@ -27,21 +28,35 @@ type GenAIClient interface {
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}
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// GenerateSolution generates a solution for the given issues using the specified AI provider
30-
func GenerateSolution(model, aiAPIKey string, issues []*issue.Issue) (err error) {
31+
func GenerateSolution(model, aiAPIKey, baseURL string, skipSSL bool, issues []*issue.Issue) (err error) {
3132
var client GenAIClient
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3334
switch {
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case strings.HasPrefix(model, "claude"):
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client, err = NewClaudeClient(model, aiAPIKey)
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case strings.HasPrefix(model, "gemini"):
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client, err = NewGeminiClient(model, aiAPIKey)
39+
case strings.HasPrefix(model, "gpt"):
40+
config := OpenAIConfig{
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Model: model,
42+
APIKey: aiAPIKey,
43+
BaseURL: baseURL,
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SkipSSL: skipSSL,
45+
}
46+
client, err = NewOpenAIClient(config)
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default:
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// Default to OpenAI-compatible API for custom models
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config := OpenAIConfig{
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Model: model,
51+
APIKey: aiAPIKey,
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BaseURL: baseURL,
53+
SkipSSL: skipSSL,
54+
}
55+
client, err = NewOpenAIClient(config)
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}
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40-
switch {
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case err != nil:
58+
if err != nil {
4259
return fmt.Errorf("initializing AI client: %w", err)
43-
case client == nil:
44-
return fmt.Errorf("unsupported AI backend: %s", model)
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}
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return generateSolution(client, issues)

autofix/ai_test.go

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@@ -81,8 +81,11 @@ func TestGenerateSolution_UnsupportedProvider(t *testing.T) {
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}
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// Act
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err := GenerateSolution("unsupported-provider", "test-api-key", issues)
84+
// Note: With default OpenAI-compatible fallback, this will attempt to create an OpenAI client
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// The test will fail during client initialization due to missing/invalid API key or base URL
86+
err := GenerateSolution("custom-model", "", "", false, issues)
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// Assert
87-
require.EqualError(t, err, "unsupported AI backend: unsupported-provider")
89+
// Expect an error during client initialization or API call
90+
require.Error(t, err)
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}

autofix/openai.go

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package autofix
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import (
4+
"context"
5+
"crypto/tls"
6+
"errors"
7+
"fmt"
8+
"net/http"
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10+
"github.com/openai/openai-go/v3"
11+
"github.com/openai/openai-go/v3/option"
12+
)
13+
14+
const (
15+
ModelGPT4o = openai.ChatModelGPT4o
16+
ModelGPT4oMini = openai.ChatModelGPT4oMini
17+
DefaultOpenAIBaseURL = "https://api.openai.com/v1"
18+
)
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20+
var _ GenAIClient = (*openaiWrapper)(nil)
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22+
type OpenAIConfig struct {
23+
Model string
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APIKey string
25+
BaseURL string
26+
MaxTokens int
27+
Temperature float64
28+
SkipSSL bool
29+
}
30+
31+
type openaiWrapper struct {
32+
client openai.Client
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model openai.ChatModel
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maxTokens int
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temperature float64
36+
}
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func NewOpenAIClient(config OpenAIConfig) (GenAIClient, error) {
39+
var options []option.RequestOption
40+
41+
if config.APIKey != "" {
42+
options = append(options, option.WithAPIKey(config.APIKey))
43+
}
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45+
// Support custom base URL (for OpenAI-compatible APIs)
46+
if config.BaseURL != "" {
47+
options = append(options, option.WithBaseURL(config.BaseURL))
48+
}
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50+
// Support skip SSL verification
51+
if config.SkipSSL {
52+
// Create custom HTTP client with InsecureSkipVerify
53+
httpClient := &http.Client{
54+
Transport: &http.Transport{
55+
TLSClientConfig: &tls.Config{
56+
InsecureSkipVerify: true, // #nosec G402
57+
},
58+
},
59+
}
60+
options = append(options, option.WithHTTPClient(httpClient))
61+
}
62+
63+
openaiModel := parseOpenAIModel(config.Model)
64+
65+
// Set default values
66+
maxTokens := config.MaxTokens
67+
if maxTokens == 0 {
68+
maxTokens = 1024
69+
}
70+
71+
temperature := config.Temperature
72+
if temperature == 0 {
73+
temperature = 0.7
74+
}
75+
76+
return &openaiWrapper{
77+
client: openai.NewClient(options...),
78+
model: openaiModel,
79+
maxTokens: maxTokens,
80+
temperature: temperature,
81+
}, nil
82+
}
83+
84+
func (o *openaiWrapper) GenerateSolution(ctx context.Context, prompt string) (string, error) {
85+
params := openai.ChatCompletionNewParams{
86+
Model: o.model,
87+
Messages: []openai.ChatCompletionMessageParamUnion{
88+
openai.UserMessage(prompt),
89+
},
90+
}
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92+
// Set optional parameters if available
93+
// Using WithMaxTokens and WithTemperature methods if they exist in v3
94+
resp, err := o.client.Chat.Completions.New(ctx, params)
95+
if err != nil {
96+
return "", fmt.Errorf("generating autofix: %w", err)
97+
}
98+
99+
if resp == nil || len(resp.Choices) == 0 {
100+
return "", errors.New("no autofix returned by openai")
101+
}
102+
103+
content := resp.Choices[0].Message.Content
104+
if content == "" {
105+
return "", errors.New("nothing found in the first autofix returned by openai")
106+
}
107+
108+
return content, nil
109+
}
110+
111+
func parseOpenAIModel(model string) openai.ChatModel {
112+
switch model {
113+
case "gpt-4o":
114+
return openai.ChatModelGPT4o
115+
case "gpt-4o-mini":
116+
return openai.ChatModelGPT4oMini
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default:
118+
return openai.ChatModel(model)
119+
}
120+
}

cmd/gosec/main.go

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159159
// key to implementing AI provider services
160160
flagAiAPIKey = flag.String("ai-api-key", "", "Key to access the AI API")
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162+
// base URL for AI API (optional, for OpenAI-compatible APIs)
163+
flagAiBaseURL = flag.String("ai-base-url", "", "Base URL for AI API (e.g., for OpenAI-compatible services)")
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165+
// skip SSL verification for AI API
166+
flagAiSkipSSL = flag.Bool("ai-skip-ssl", false, "Skip SSL certificate verification for AI API")
167+
162168
// exclude the folders from scan
163169
flagDirsExclude arrayFlags
164170

@@ -509,7 +515,7 @@ func main() {
509515
aiEnabled := *flagAiAPIProvider != ""
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511517
if len(issues) > 0 && aiEnabled {
512-
err := autofix.GenerateSolution(*flagAiAPIProvider, aiAPIKey, issues)
518+
err := autofix.GenerateSolution(*flagAiAPIProvider, aiAPIKey, *flagAiBaseURL, *flagAiSkipSSL, issues)
513519
if err != nil {
514520
logger.Print(err)
515521
}

go.mod

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github.com/mozilla/tls-observatory v0.0.0-20250923143331-eef96233227e
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github.com/onsi/ginkgo/v2 v2.27.2
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github.com/onsi/gomega v1.38.2
12+
github.com/openai/openai-go/v3 v3.8.1
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github.com/santhosh-tekuri/jsonschema/v6 v6.0.2
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github.com/stretchr/testify v1.11.1
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golang.org/x/crypto v0.43.0

go.sum

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311311
github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
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github.com/onsi/gomega v1.38.2 h1:eZCjf2xjZAqe+LeWvKb5weQ+NcPwX84kqJ0cZNxok2A=
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github.com/onsi/gomega v1.38.2/go.mod h1:W2MJcYxRGV63b418Ai34Ud0hEdTVXq9NW9+Sx6uXf3k=
314+
github.com/openai/openai-go/v3 v3.8.1 h1:b+YWsmwqXnbpSHWQEntZAkKciBZ5CJXwL68j+l59UDg=
315+
github.com/openai/openai-go/v3 v3.8.1/go.mod h1:UOpNxkqC9OdNXNUfpNByKOtB4jAL0EssQXq5p8gO0Xs=
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github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
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github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
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github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=

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